Answers
Answer:
see explanation
Step-by-step explanation:
Using the trigonometric identity
tanx = [tex]\frac{1}{cotx}[/tex]
Consider the left side
[tex]\frac{cotA-1}{cotA+1}[/tex] ← divide terms on numerator/denominator by cotA
= [tex]\frac{\frac{cotA}{cotA}-\frac{1}{cotA} }{\frac{cotA}{cotA}+\frac{1}{cotA} }[/tex]
= [tex]\frac{1-tanA}{1+tanA}[/tex]
= right side , thus proven
Related Questions
Will give brainliest!
Answers
Answer:
250.35
Step-by-step explanation: pythagorean theorem
215^(2)+x^(2)=330^(2)
46225+x^(2)=108900
x^(2)=62675
x=5√2507
x=250.35
Answer:
250.35 yards
Step-by-step explanation:
Use the pythagorean theorem to find the height.
[tex]\sqrt{a^{2}+b^{2} }=c[/tex]
Algebraically change the equation to equal to b.
[tex]\sqrt{c^{2}-a^{2} }=b[/tex]
[tex]\sqrt{330^{2}-215^{2} }=b[/tex]
b=250.35 yards
x + 3 1/2 = 10 What is the value of x?
Answers
Answer:
X = 6 1/2
Step-by-step explanation:
X is equal to 6 1/2 because, if you subtract 3 1/2 from 10 you will be left with 6 1/2.
After you withdraw $35 from your checking account, the new balance is $260. Which equation shows the equation that could be used to find the balance on your account before the withdrawal?
Answers
if someone could give me the answer and step by step
Answers
Answer:
101 cm (to 3 sf)
Step-by-step explanation:
-First you want to find side CD:
. Draw a line from point C directly down to make a right angled triangle (you can lable the extra point whatever letter you want but for this explanation it's gonna be x)
. You know that CX will be 16.7cm because its the same length as BA
. To find CD you need to use SOH,more specifically the hypotenuse using SOH
. H=O/S (O=16.7, S= sin(43))
.put this in your calculator and you'll get CD=24.4868624 (don't round yet)
-now you wanna find AD but more specifically XD because that's the little part you don't know:
. Using the same triangle from earlier, we use CAH now to find A (aka XD)
. A=C*H (C=cos(43), H=24.4868624 (the value of H/CD from the previous calculation)
. That should give you: 17.90855746
. You're still not done, do 17.90855746+21.2=39.10855746 (this is your value for AD
-add all your values now:
39.10855746+24.4868624+16.7+21.2=101.4954199
-now round to 3 significant figures:
101.4954199 -> 101cm
The perimeter is 101cm
if [tex]\sqrt{ 7-y[/tex] = 6 , then y = ?
Answers
Answer:
- 29
Step-by-step explanation:
[tex]6^{2}[/tex] = 36
if: [tex]\sqrt{7 -y} = 6[/tex]
then:
[tex]7 - y = 36[/tex]
[tex]y = -29[/tex]
BRAINLIEST
Plot the following co-ordinates and find the fourth point D to make a square A (-1,3) B (1,-1) C(5,1).
Once you have found the missing coordinate use pythagoras to calculate the length of the sides.
Answers
Answer:
Next coordinate is (-1,-3)
Step-by-step explanation:
draw a graph in graph paper and mark all coordinates
Put the numbers below in numerical order from least to greatest.
-9, 12, 0, 99, -107, 3, 5, -42
1. 0,3,5,-9, 12, -42, 99, -107
2.-9,-42, -107, 0, 3, 5, 12, 99
3.-107,-42, -9,3, 5, 12, 99, 0
4.-107, -42, -9,0, 3, 5, 12, 99
Answers
Sally bought a sofa for $450. It was marked 35% off. The sales tax is 8.5%. Find the total cost of the sofa.
Answers
Answer:
$170.89 I think
Step-by-step explanation:
Answer:
answer amswersmwkkw
Step-by-step explanation:
7%
I NEED ANSWERS!! QUESTION 13
Answers
Answer: i dont know sorry
Step-by-step explanation:
Answer:
118
Step-by-step explanation:
Im such an idiot for not paying attention in class but someone help PLEASE the assignment is due at 3:05 and its 2:50
Answers
Answer:
Help with what?
Write an equation where the variable is divided by a number, and a solution is -4/5
Answers
Answer:
x/-5
Step-by-step explanation:
Just divide by 5 and the denominator will be 5 meaning x would have to be 4.
Make sure your 5 is negative so the whole equation also ends up negative. x/-5=-4/5
A medical equipment industry manufactures X-ray machines. The unit cost C (the cost in dollars to make each X-ray machine) depends on the number of machines made. If x machines are made, then the unit cost is given by the function C(x) = 0.1x2 - 16x +8097. What is the minimum unit cost? Do not round your answer.
Answers
Answer:
why cant i round, for example, .9
8. Solve for x. Round to the nearest tenth. (4pts)
55°
7
x=
Answers
Answer: I think 2
Step-by-step explanation:
Because
What do studies tell about people's way of life in traditional societies??
(Note: Please don't give me silly answer)
Answers
Step-by-step explanation:
buffet or tells about the beliefs values behaviour and material object that constitute a people's way of life
Answer:
In sociology, traditional society refers to a society characterized by an orientation to the past, not the future, with a predominant role for custom and habit. Such societies are marked by a lack of distinction between family and business, with the division of labor influenced primarily by age, gender, and status.
Step-by-step explanation:
Hope it is helpful.....
what is x + y = -9 in y=mx+b form
Answers
Answer: Talk the Talk. Once a linear equation is solved for y, it is in slope-intercept form, y = mx + b. The coefficient of the x term, m, is the slope of the line and the number (or constant), b, is the y-intercept.
Step-by-step explanation: want it take it don’t want it dont take it
Francis is saving money for a new kindle. she needs to save at least $200 to pay for it and has decided to save $25 per week from babysitting. how many weeks will it be before she can purchase the new kindle. show work please
Answers
Answer:
8 weeks
Step-by-step explanation:
to solve divide the total cost of kindle by the money she saves each week.
200÷25 is 8.
and to check you can multiply 25 x 8
PLEASE HELP QUICKLY!!
Answers
Answer:
79
Step-by-step explanation:
Sense all the lines are straight, and will never cross, then adjacent angles must always add up to 180 degrees. 3 and 4 are adjacent. Thus they must add up to 180. So set up as 101 + x = 180. x=180 - 101, and find that x = 79. Plug x back into check. 101 + 79 = 180. and 180= 180. The answer is 79 degrees.
2. Tanya is 15 years older than Sarah. In 3 years, the sum of their ages will be 41.
a) Write an expression for Tanya's age in terms of Sarah's age. Use S to represent Sarah's
current age
b) Write an expression for how old Tanya will be in 3 years, using the expression you wrote
for her age
c) Write an expression for how old Sarah will be in 3 years, using S to represent Sarah's
current age.
d) Write an equation that shows the sum of their future ages will be 42
e) Solve that equation to find Sarah's current age
f) What is Tanya's current age?
Answers
Hope this help.
How many meters does light travel 8 hours? The speed of light is 3x10(8th power)m/s?
Answers
Answer:
300,000,000
Step-by-step explanation:
3 x 10^8
30 x 10 x 10 x 10 x 10 x 10 x 10 x 10 x 10 = 300,000,00030 x 10 = 300300 x 10 = 3,0003,000 x 10 = 30,00030,000 x 10 = 300,000300,000 x 10 = 3,000,0003,000,000 x 10 = 30,000,00030,000,000 x 10 = 300,000,00Thats 10 used 8 times to get you up to 300,000,000
so your answer is 300,000,000m/s
Hope this helps
Hope this is right
What’s the answer for this?
Answers
Answer:
Step-by-step explanation:
The next four terms should be 16, 32, 64, 128 squares. This is similar to linear functions because, linear functions have a slope that never changes and as you can see here question on E the numbers are doubling and doing it consistently like a linear function
Question 1 of 3
Type the correct answer in the box. Use numerals instead of words. If necessary, use / for the fraction bar.
Kay walks upstairs to make her legs stronger. Every day at work, she walks up 9 flights of stairs. If there are 13 steps in 1 flight of
stairs, how many steps does Kay climb in 5 days at work?
Solve the problem
steps
Submit
Reset
Answers
Answer:
13 x 9 x 5
Step-by-step explanation:
because there is 13 steps in one flight and there fore we need to multiply 13 x 9
then we have to multiply the product by 5 because it is asked how many steps does she climb in five days
WHAT IS 4,876 DIVIDED BY 76?
i in 3rd grade doing advanced wok, i need help!
Answers
Answer:
64,1578
Step-by-step explanation:
your welcome
Mrs. Meier bought 5 pounds of
carrots for $1.75. Which represents
the same price per pound?
Answers
Answer:
0.35 cents
Step-by-step explanation:
Answer:
it is $0.35 per pound
Step-by-step explanation:
1.75/5 = 0.35
x3 - 3x^2- 54x + 112
Answers
Answer:
(x -2) (x- 8) (x+7)
Step-by-step explanation:
If △ABC∼△LMN and △LMN∼△XYZ, is △ABC∼△XYZ? Use the AA similarity criterion to support your answer.
Answers
Answer:
yes because transitive property
Step-by-step explanation:
if abc~lmn, then the angles a and b are similar to angles l and m. and if lmn~xyz then angles l and m are similar to angles x and y. therefore, using transitive property, angles a and b would be similar to angles x and y. so using AA similarity, the two triangles would be similar
^^^^^^^^^^^^^^^^^^^^^^^^
Answers
Answer:
117
Step-by-step explanation:
brainliest please
someone pls help:>>
Answers
Explanation:
Imagine that you cross out the top-most square for each step of each diagram. The squares not crossed out have the following counts: 1, 4, 9
This is the sequence of perfect squares. So the rule will have us take the number n, and square it to get n^2. Then we add on the squares we crossed out earlier. This explains the "plus 1" at the end to get the answer of n^2+1
Answer:
[tex] {n}^{2} + 1 \\ \: respresents \: the \: following \: \\ function[/tex]
i hope it helped.
Pupil who scored 60 in her maths test was absent for English predict what her English mark could have been
Answers
Answer:
There is 30% probability for the students who score 60 marks in math.
Step-by-step explanation:
The probability of the students who score 60 marks in math is 30%. There is 70% chance that a student will score less than 60 marks in math. The students who score 60 plus in math will score lesser in English.
What is the slope between (2,1); (5,9)
Answers
Step-by-step explanation:
To find the slope, you divide the difference of the y-coordinates of 2 points on a line by the difference of the x-coordinates of those same 2 points.
Answer:
[tex]\frac{8}{3}[/tex]
Step-by-step explanation:
(2, 1)
(5, 9)
Find the slope
____________
When finding slope, we always have to follow the formula :
[tex]\frac{y^2-y^1}{x^2-x^1}[/tex]
The y in the fraction are the second number within the coordinate points, while the exponents are the second number from the second point and the first number from the first point. The same goes for x. Therefore substitute x and y with their corresponding values :
[tex]\frac{9-1}{5-2}[/tex]
[tex]\frac{8}{3}[/tex]
a pile of coins, consisting of only dimes and quarters, is worth 4 dollars and 55 cents. there are 7 more dimes than quarters in the pile. find the number of dimes and quarters in the pile.
Answers
11 quarters
and 18 nickels
Hope this helps! :D