Mathematics High School

The value of the cosine of an angle in Quadrant Il is given. cos theta= -2/5 What is sin theta? O- ✓29 5 V10 5 5 VI 21 5​

Answers

Answer 1

Answer:

[tex]\frac{\sqrt{21} }{5}[/tex]

Step-by-step explanation:

Given

cosθ = - [tex]\frac{2}{5}[/tex]

Using the identity

sin²θ + cos²θ = 1 , then

sinθ = ± [tex]\sqrt{1-cos^20}[/tex]

       = ± [tex]\sqrt{1-(-\frac{2}{5})^2 }[/tex]

      = ± [tex]\sqrt{1-\frac{4}{25} }[/tex]

      = ± [tex]\sqrt{\frac{21}{25} }[/tex]

     = ± [tex]\frac{\sqrt{21} }{5}[/tex]

Since θ is in second quadrant the sinθ > 0 , thus

sinθ = [tex]\frac{\sqrt{21} }{5}[/tex]

Related Questions

Amy mows lawns to earn money for a new phone. She charges $8.15 an hour. How much money will she earn if she mows for 4.5 hours? Show your work for full credit.

Answers

its easy but let me explain

Step-by-step explanation:

If she earns $8.15 an hour and she works for 4 1/2 hours.

You multiply

$8.15 x 4.5 = n

n= $36.675    But your not done yet, ROUND TO HUNDREDTHS PLACE!!!

if there is a number 5 or higher next to the hundredths place then you bump the number up by 1

she would of earned $36.68 in 4.5 hours  Glad to help

Emily has a box shaped like a rectangular prism that is full of sugar cubes. • Each sugar cube has a volume of 1 cubic centimeter. • The top layer has a width of 6 cm and a length of 11 cm. • There are 3 layers of sugar cubes.How many sugar cubes are in the box?

Answers

Answer:

Step-by-step explanation:

12 candies for every 12 cookies how many candies for 36 cookies?

Answers

Answer:

36

Step-by-step explanation:

Answer:

36 candies for 36 cookies.

What is the inverse (opposite) of subtraction?

Answers

Answer: Addition I think

which one is right I need to know the answer

Answers

Answer:

your answer will be option C).0

Step-by-step explanation:

hope it helps you

what are the coordinates of point B?​

Answers

Answer:

(4,-3) lol if it's helpful ur welcome

Answer:

(4,-3)

Step-by-step explanation:

On the x-axis, you go over four to get the first coordinate and down 3, or negative 3 to get the second coordinate.

Please help with this question it is 60% of my grade.

Answers

Answer: b

Step-by-step explanation:

you start with 0 min- equals 24

1 min- 21

2 min- 18

3 min- 15

4 min- 12

5 min- 9

and so on- you look for the table that best describes that. x represents the minutes, and y represent the amount of water left in the sink.

Answer:

B

Step-by-step explanation:

After the first minute it should be at 21, because it would be reduced by 3. Second, the same. ETC

X-intercepts: (2, 0) and (4, 0)

Equation:

Answers

Answer:

4-2=2

Step-by-step explanation:

since they are on the same quadrant you we subtract.

Which point represents 2 3/4 on the number line?

Answers

Answer:

e

Step-by-step explanation:

The answer im thinking is E

HELP ASAP I GUVE BRAINLIEST

Answers

the answer is A your welcome

Answer:

i think it would be figure c but i could be wrong

A real-world problem with a sample and a population is modeled by the proportion 66/100=x/2,500. Use the proportion to complete the sentences.

Answers

Answer:

x = 1,650

Step-by-step explanation:

A real-world problem with a sample and a population is modeled by the proportion 66/100=x/2,500. Use the proportion to complete the sentences.

From the above question, we have to solve for x

Hence, we have the proportion

66/100=x/2,500

Cross Multiply

100 × x = 66 × 2,500

x = 66 × 2,500/100

x = 1,650

Find the value of x.
75°
(11x – 5)º
The value of x is

Answers

I think the value of x may be x

answer pls
3278+32+3213+89321+31398

Answers

Answer:

oop

Step-by-step explanation:

127247

sorry if wrong I kept getting notifications

Answer:

127,242

Step-by-step explanation:

le calculator helps out a lot

Which graph on the number line represents x > 0.8?

Answers

Answer:

The first one.

Step-by-step explanation:

Marcos invited 33 guests to his party. So far, 8 guests have replied "will attend" and 9 guests have replied "will not attend". How many guests (g) still need to reply?

Answers

Answer:

16 people haven't replied

Step-by-step explanation:

Add 9 + 8 = 17 and subtract 33 - 17 = 16

If this helps

The guests (g) still need to reply are 16.

What is arithmetic operation?

Arithmetic operation is an elementary part of mathematics that consists of the study of the properties of the traditional operations on numbers—addition, subtraction, multiplication, division, exponentiation, and extraction of roots.

Now it is given that,

Number of guests invited = 33

Number of guests replied "will attend" = 8

Number of guests replied "will not attend" = 9

So, total guest replied = 8 + 9

⇒ total guest replied = 17

Thus, the guests (g) still need to reply = 33 - 17

⇒ the guests (g) still need to reply = 16

Thus, the guests (g) still need to reply are 16.

To learn more about arithmetic operation :

brainly.com/question/13585407

#SPJ2

can someone help please?

Answers

CCCCCCCCCCCCCCCCCCCCCCCCCCCCC

9 to the 4th power?

srh4uieeughi53thwkwsmlxwes

Answers

Answer: 6561

9 x 9 x 9 x 9

9 x 9 = 81

81 x 9 = 729

729 x 9 = 6561

:

Please help me guys need ASAP

Answers

This explains how to find the vertex and the answer to your problem

Question 1

Find the value of x.
2x
(3x + 25)
X

Answers

Answer:

2x+3x+25=180

5x =155

X=31

NEED HELP ASAP!!

Here is a graph for one equation in a system of equations. Which equation would make the solution for the system of equations be infinitely many solutions

a. Y=2x+10
b. y= -2x+3
c. y=2x+3
d. y=1/2x+3

Answers

Answer:

c.) y=2x+3

Step-by-step explanation:

the slope is 2 and the y-intercept is 3

Someone pls help, this is really hard

Answers

Answer:

So the formula of area of the circle A=πr2. The answer is 153.86.

Step-by-step explanation:

You first divide 14/2=7 then do 7^2 which equals 49 lastly multiplying 3.14 X 49. So how is the radius 7 because half of a diameter is a radius.Therfore the answer is 153.86.

What is the area of the green (shaded) region?
20 km
11 km
11 km
18 km

Answers

Answer:

43560 I think

Step-by-step explanation:

20 x 11 x 11 x 18

43560 I second them

*
7. What is the area of the triangle shown below?
37 mm
48 mm
O 4.44 square millimeters
O 5.92 square millimeters
8.88 square millimeters

Answers

Answer:

Can you show a picture of the problem?

Step-by-step explanation:

3q + 3j
if q= 7 and j = 4​

Answers

Answer:

33

Step-by-step explanation:

3q + 3j

if q= 7 and j = 4​

3(7) + 3(4) = 21 + 12 = 33

Answer:

33

Dude, just plug in the numbers. You should have: 3(7) + 3(4). Then solve.

Step-by-step explanation:

Cos Milky Said it. Milky Smart.

BE CAREFUL IF YOU SEE A LINK dont click it some of the links cant be trusted ​

Answers

Answer:

ok ok i wont

Step-by-step explanation:

4th task Help please

Answers

1000+(x)(100)=
Explanation
(100)(10)=1000 for the money for triple doubles
He gets 100 for every triple double so you times that by x amount of games of triple doubles he has.

Answer:

Sssssnake ssssssnake sssssnake .                                                                                   ........................................                              

Step-by-step explanation:

The graphs of functions f and g are shown. Which statements are evidence that function g is the inverse of function f?

Answers

Answer:

It is C and D

Step-by-step explanation:

What is the density of an object with a mass of 48 grams and a volume of 3 mL?

A. 51 g/mL
B. 16 g/mL
C. 45 g/mL
D. 144 g/mL

Answers

Answer:

b/ 16 g/ml

Step-by-step explanation:

density = mass / volume

= 48g/3ml

If a container has a capacity of 2 quarts how many fluid ounces can the container hold

Answers

Search up the difference

I need help now!

Rewrite the sum 12a + 4b using the Commutative Property of Addition. please help!

Answers

Answer:

is it - 4(3a+b)    ?

Step-by-step explanation:

Other Questions
SPANISH 2 GRAMMAR unit 5.1 help me please, no incorrect answer plz j take my points and leave. I Favor a market system in which the government regulates the economy. We need the government to protect us against big businesses. Unlike the private sector, the government is motivated by public interest. * O Democrat O Republican O Independent please help ill give brainlist!!!!!!Match each word with another word that has similar vowel sounds. Drag each tile to the correct box. Tiles amateur vacancies criticize Cocoon Pairs attune civilize odor angel Tigers in some areas are destroyed ________ poachers kill them for their skins. A. duringB. beforeC. becauseD. although How can you go 10 days without sleep? I'd appreciate the right answer Some help please :)At which stage in the life cycle of a star is helium combined to form elements lithium through iron? Explain. In 2010, talk radio had approximately 89 million listeners.TrueFalse State the 10 types of PomologyOlericultureHorticulture In agriculture. Question 1: In Math mean means..A. average B. divideC. GCFD. LCM A sculpture is in the shape of a cylinder. The sculpture has a diameter of 10 feet and a height of 21 feet. Which measurement is closest to the total surface area of the sculpture in square feet? The black line is a graph of y=x. Which of these equations could represent the blue line How many terms are in this expression ? 9k + 4m what is the pattern of valence numbers on the periodic table? Cameron ran 5 miles less than Kyle last week, Cameron ran 9 miles. Which equation will tell you how many miles Kyleran? A) x + 5 = 9B) x - 5 = 9C) x + 5 = -9D) x - 5 = -9 Eli built a 3-D model of a building, as shown below. Eli wrote the following calculation to find the volume.Which is a correct description of the error Eli made while calculating the amount of sand needed to fill the model? A. He did not include the volume of the horizontal prism. B. He did not include the volume of the vertical prism. C. He included the volume of where the prisms overlap twice. D. He included the volume of the entire horizontal prism twice. Help Please! SOS! ASAP! Which number is an even number 16 27 35 or 49 I need help with this spanish The targeted skill scope strategy A. seeks to attract a large number of applicants who may have the characteristics that are needed to perform the specific job. B. seeks to attract a small group of applicants who have a high probability of possessing the characteristics that are needed to perform a specific job. C. is often used by an organization employing the Loyal Soldier HR strategy. D. is optimal for attracting a large number of applicants for each position and then basing hiring decisions on assessment of fit with the culture and values of the organization.