Given sin0= 3/7, and tan0 <0, what is the value of coso?

Answers

Answer 1

sin θ = 3 / 7 = .429

sin^2 θ + cos^2 θ = 1      trig identity

9/49 + cos^2 θ = 1

cos^2 θ = 40 / 49 = .816       cos θ = .903

Check .429^2 + .903^2 = 1

cos .903 = 25.4 deg

In the second quadrant sin = +, cos = -, tan = -

So 25.4 deg in the second quadrant = 180 - 25.4 = 154.6 deg

Check:

sin 154.6 = .428

cos 154.6 = -.903

tan 154.6 = -.475


Related Questions

Determine the value of the given expression -3 1/3×1 5/6

Answers

Answer: 6

Step-by-step explanation:

3

1

a−1−

2

1

b

=

3

1

⋅12−1−

2

1

⋅6 Replace a with 12 and b with 6.

=4−1−3

=0

Ms. Rowlen went Black Friday shopping and she bought a flat screen TV that originally costs $259.00. She used her super Savings Coupon of 45%, how much did Ms. Rowlen pay for the TV?

Answers

Answer:

116.55$

Step-by-step explanation:

[tex]259 \times \frac{45}{100} = 116.55[/tex]

What is the median of the following data values?
10, 11, 12, 15, 19, 24, 27, 29, 33, 38

Answers

Answer:

21.5

Step-by-step explanation:

Make sure they are in order.

A median is basically (or literally) the number in the middle of the data set.

In this case, it is 19 and 24. To get the middle number, you have to:

Add the two numbers and divide them by 2.

19 + 24 = 43

43/2 = 21.5

Evaluate223×225Give your answer as a mixed number in its simplest form.

Answers

The answer is 50, 175

Find the area of the shape

Answers

Answer:

400 [tex]ft^{2}[/tex] (Don't forget the square symbol!)

Step-by-step explanation:

For the triangle:

Base times height divided by 2.

8 x 25 = 200

200/2 = 100

For the regtangle:

Width times height.

25 x 12 = 300

Add them together, and you get:

100 + 300 = 400.

Answer:300

Step-by-step explanation:25*12=300

25

x12

50

250+50=300

is it 3 pls help for brainly

Answers

Answer:

Step-by-step explanation:

First, let’s flip the first term.

2^-x = 8^2-x

we can take ^3 out of the 8 to simplify

2^-x = 2^3(2-x)

-x = 3(2-x)

Now we solve for x.

x = 6

Hope this helps!

What is the vertex of y = 2(x - 3)^2 - + 67
a) (-3. -6)
b) (3, -6)
C) (-3. 6)
d) (3, 6)

Answers

The answer should be (3,-67) but I don’t see it so I don’t know but the real answer should be (3,-67)

18 of the 23 tables at Paul's Italian Restaurant are full. What is the ratio of the number of full tables to the number of empty tables?

Write your answer as two numbers separated by a colon (for example, 2:3).

Answers

Answer: 18:23

Step-by-step explanation:

Plz help me, i need this done 2 get my phone back

Answers

Answer:

Step-by-step explanation:

4x = 3yz^2

4x/3y = z^2

To undo an exponent you root it.

[tex]\sqrt{4x/3y} = z[/tex]

I believe this is it. you basically just have to divide by the numbers to get z by itself. If you have any questions please comment.

(50 x 40 / 4 + 20) + (50 / 2 + 25) =

Answers

Answer:

= 570

Step-by-step explanation:

Priority in order:

BracketX and /+ and -

    (50 x 40 / 4 + 20) + (50 / 2 + 25)

=   (2000 / 4 + 20) + ( 25 + 25)

=   ( 500 + 20) + ( 50 )

=   ( 520 ) + 50

=   520 + 50

=   570

HELPPPPPPPPPPPPPpppp

Answers

8.722 / (-3.56)

Expand [tex]\frac{8.722}{-3.56}[/tex] by multiplying both numerator and denominator by 1000.

[tex]\frac{8722}{-3560}[/tex]

Reduce the fraction [tex]\frac{8722}{-3560}[/tex] to the lowest terms by extracting and cancelling out 178.

-[tex]\frac {49}{20}[/tex] = -2.45

Triangle 1 is composed of line segments AB, BC, and CA.Triangle 2 is composed of line segments DE, EF, and FD.The triangles are similar with a scale of 5:2.Select the true statement about the proportions of the sides.

Answers

Answer:

s**t i'ma be real i don'`t know i was doing imagine math and that question poped up on  my quiz and i got it wrong

Step-by-step explanation:

I Don't Know

Write the following statements in the form of equations.
c. One third of a number plus 7 is 26.

Answers

Answer:

Brainless please?

Step-by-step explanation:

1/3x +7=26

Solve for x using common denominators. 3 over the quantity 5 times the binomial x minus 4 equals x over the quantity x minus 4 −5 over 3 5 over 3 −3 over 5 3 over 5

Answers

Answer:

  (d)  3/5

Step-by-step explanation:

The equation ...

  [tex]\dfrac{3}{5(x-4)} =\dfrac{x}{x-4}[/tex]

can be rewritten so that each side has the same denominator. Then the solution can be found by equating the numerators.

  [tex]\dfrac{3/5}{x-4} =\dfrac{x}{x-4}\\\\\boxed{\dfrac{3}{5} =x}[/tex]

_____

Additional comment

"Equating the numerators" is equivalent to multiplying both sides by the common denominator. Of course, any value of the variable that makes the denominator zero is excluded from the solution set.

Need help !!!!!!!!!!!!!!!!!!!

Answers

rectangle. it’s a 2d 4 sided shape with 2 sets of parallel sides

round to the nearest percent. from 64 photos to 21 photos

Answers

Answer: 71 percent

Step-by-step explanation:

64-21=43

43/64=.71  

help with math asap!
ty in advance :)

Answers

Answer:

2.108*10^3

Step-by-step explanation:

how much would it cost for a 9-hour repair

Answers

it would depend on what someone would be repairing wether it be a computer repair, car repair, plumbing etc.
regardless 9 hours is a very long time so i would not expect it to be too cheap.
hope this helps

PLS HELP.

7) Find RQ

Answers

Answer:

are we doing ur homework

Step-by-step explanation:

If f(x) = 3 ^ x - 7 and g(x) = x ^ 2 + 11 , the value of f(2) - g(7) is:

Answers

Answer:

The value of [tex]f(2) - g(7)=-58[/tex]

Step-by-step explanation:

We have

[tex]f(x) = 3 ^ x - 7\\\\f(2) = 3 ^ 2 - 7\\\\=9-7\\\\=2\\\\g(x) = x ^ 2 + 11\\\\g(7) = 7 ^ 2 + 11\\\\=49+11\\\\=60\\\\f(2) - g(7)=2-60\\\\=-58[/tex]

Two different floor plans are being offered in a new housing development. Several prospective buyers from three different age groups were surveyed about which plan they preferred. Find the probability that a randomly selected buyer preferred Plan A or was in the 40- to 49-year-old age group.

Answers

Answer:

0.677

Step-by-step explanation:Add up the values in the plan A column. There are 10+12+16 = 38 people who prefer plan A.

Add up the values in the "40-49" row to find that 16+8 = 24 people are ages 40 to 49.

We have 38+24-16 = 46 people who either prefer plan A, are aged 40-49, or fit both descriptions. I subtracted off 16 because those 16 people were counted twice when adding 38 and 24.

An alternative way to get this value of 46 is to add up everything that is in column1 or row 3 (or both). So that would get 10+12+16+8 = 46.

Now add up everything in the table to find out how many people were surveyed total. That would be 10+7+12+15+16+8 = 68 people overall.

The probability of someone liking plan A, or being age 40-49, or both is 46/68 = 0.6765 approximately. Rounding to 3 decimal places gives 0.677

what is 24% of 80 plzz help

Answers

Answer:19.2

Step-by-step explanation:

Answer 1-2 no links.​

Answers

Answer:

Step-by-step explanation:

please help me to get the answers please read my questions​

Answers

Answer: Where is the question.

Step-by-step explanation: Where is the question.

You’re question is not on your account so where is it? If u can please comment it

Write the equation of the line that passes through the point (4,5) and is perpendicular to the graph of y=2x-3

Answers

Hello there! :)

We are given that the line passes through the point (4,5) and that it's perpendicular to the line y=2x-3.

Perpendicular lines have slopes that are opposite reciprocals.

This means we take a number, make it negative, and flop it over:

2

-2

-1/2

So the slope of the line perpendicular to y=2x-3 is -1/2.

Now, we have the slope and a point that the line passes through, so we can write the equation in point-slope form, which looks like so:

y-y1=m(x-x1)

Where

y1 is the y-coordinate of the point

m is the slope

x1 is the x-coordinate of the point

Now, let's plug our values into the equation:

y-y1=m(x-x1)

y-5=-1/2(x-4)

y-5=-1/2x+2

y=-1/2x+2+5

y=-1/2x+7

Hence, that is the equation of the line.

Hope it helps.

~A lonely teen who helps others with a smile

-Grace :-)

Good luck.

The perimeter of the triangle is 20.6 centimeters. What is the unknown side length?

Answers

Answer:

OK so a triangle has 3 sides and the perimeter around it is 20.6 cm to find the unknown for the length of a side it would be 20.6 ÷3 which is = to 6.86 to 2 decimal places

Step-by-step explanation:

20.6÷3

= 6.86 cm to 2 dp

Jane’s starting annual salary is $45,520. At the beginning of each new year, she receives a $1,580 raise. What will her salary be after 11 years?

Answers

Answer:

$62,900

Step-by-step explanation:

guys pls help with all the steps ​

Answers

Step-by-step explanation:

To solve both questions you will have to use the Pythagoras theorem

[tex] {c}^{2} = {a}^{2} + {b}^{2} [/tex]

c being the hypotenuse

so to find AB we say

[tex] {ap}^{2} = {pb}^{2} + {ab}^{2} [/tex]

To make AB the subject of the formula, we take PB over. Therefore:

[tex] {ab}^{2} = {ap}^{2} - {pb}^{2} [/tex]

now we just substitute

[tex] {ab}^{2} = {13}^{2} - {5}^{2} [/tex]

[tex] {ab}^{2} = 169 - 25[/tex]

[tex] {ab}^{2} = 144[/tex]

square root both sides of the equation

[tex]ab = 12[/tex]

We then use the same formula to find AQ(which is a hypotenuse)

[tex] {aq}^{2} = {ab}^{2} + {bq}^{2} [/tex]

[tex] {aq}^{2} = {12}^{2} + {9}^{2} [/tex]

[tex] {aq}^{2} = 144 + 81[/tex]

[tex] {aq}^{2} = 225[/tex]

square root both sides

[tex]aq = 15[/tex]

A product of a number and 6 is 26
Choose the answer:
A. n*6=26
B. 6+n =26
C. 6-n
D. 6-n=26

Answers

Answer:

A

Step-by-step explanation:

n is the number.

So n*6=26

Hey there!

Guide:

• Difference = Subtract

• Is = Equal to

• Product = Multiply

• Quotient = Divide

• Sum = Add

• Unknown number = a number that’s isn’t known yet

Question reads….

“ A [PRODUCT] of [a NUMBER] & 6 [is] 26”

RANDOM:

• Product is multiply/multiplication

• A number is unknown so we will label it as “n”

• 6 stays the same because nothing happened to it

• 26 is BEHIND the equal sign but nothing happens to it because nothing is being compared to it

ANSWER:

“n * 6 = 26”

Good luck on your assignment and enjoy your day!

~Amphitrite1040:)

Can someone please help me with this easy math problem

Answers

The slope is: 2
Ok done. Thank to me:>