1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
LenaWriter [7]
4 years ago
10

Given sin theta = 2/5 and 0 theta 90 find sin 2 theta

Mathematics
2 answers:
krok68 [10]4 years ago
7 0

Answer:

The value of \sin^2 \theta=\frac{4}{25}                                                                            

Step-by-step explanation:

Given : \sin \thet=\frac{2}{5} and  0

To find : The value of \sin^2\theta ?

Solution :

We have given the value of \sin \thet=\frac{2}{5} and  0

To find \sin^2\theta we just have to square \sin\theta

\sin \theta=\frac{2}{5}

Squaring both sides,

(\sin \theta)^2=(\frac{2}{5})^2

\sin^2 \theta=\frac{4}{25}

Therefore, The value of \sin^2 \theta=\frac{4}{25}

Liono4ka [1.6K]4 years ago
6 0

Given:  sin theta = 2/5.  This tells us that the lengths of the opp side and the hyp are 2 and 5 respectively.  The adj side is found using the Pyth. Thm.:  5^2-2^2= 25-4 = 21, so that the adj side is sqrt(21).

The double angle formula for the sine is sin 2theta = 2 sin theta *cos theta.

In this particular problem, the sine of 2theta is 2*(2/5)*[sqrt(21) / 5], or:

                                                                              (4/25)*sqrt(21).

You might be interested in
if I want a PlayStation for $300.00 and I get paid $10.50 a week how long would it take me to buy the PlayStation
konstantin123 [22]

Answer:

29 weeks or 4 months (not exactly)

Step-by-step explanation:

300/10.5 is 28.57

which 29 weeks, you earn 4 dollars and 50 cents left over

8 0
3 years ago
The graph shows the relationship between the number of apples and their cost. For the point (1, r), what is the value of r?
3241004551 [841]

Answer:

C.

Step-by-step explanation:

When you check the point that is on X, it is a little over halfway to the point 1,2. It would be like 1,1.5 or 1,1.6.

5/3 is the equivalent to 1.6 so that answer would make the most sense.

4 0
3 years ago
Read 2 more answers
Nikola buys a bouquet of 8 sunflowers for $18<br> What is the cost of 1 sunflower?
Umnica [9.8K]
1 sunflower = $?
8 sunflowers = $18

Divide $18 by 8 = 2.25

1 sunflower is $2.25.
8 0
3 years ago
Read 2 more answers
Marissa went on a trip and drove her car throughout the day. The graph below shows Marissa's distance from the starting point of
n200080 [17]
Can u take a picture of the graph
6 0
3 years ago
Is the relation { (3, 2), (-1, 2), (7, 2), (0, 2)} a function? Why or why not? List the domain and range.
Makovka662 [10]

Answer:

its a function because each input (X) only has one output (y)

domain (3,-1,7,0)

range (2)

Step-by-step explanation:

6 0
3 years ago
Other questions:
  • You decide you need a new computer. The cost of the computer is $768. However,
    9·1 answer
  • In the diagram below, AB is parallel to CD. What is the value of x?
    5·2 answers
  • Solve the following system by the substitution method<br><br> 2x+y=4<br> y+2x
    14·1 answer
  • Write and solve an equation ​
    6·2 answers
  • What are the two offices underneath the jurisdiction of the executive office<br> In government
    5·1 answer
  • TJ-Maxx offered a 36% discount off the original
    11·2 answers
  • In chapter 9, we discussed Confidence Interval methodology to draw conclusions about the difference in the brain size of the chi
    12·1 answer
  • 3x + 8 = −10 <br> please help me
    7·2 answers
  • Express 0.00386×10-4 in standard form?(Urgent....Answer if sure)
    8·1 answer
  • Responda a expressão 5x+6y+x+2:​
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!