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
olganol [36]
2 years ago
14

Hi can someone please help me? If sin2A=cos 3A find the value of A. Can you please explain in full detail how you arrived at you

r answer? Also Find the exact value of (sec30)^2. Will I need to use a calculator in order to solve this prob?
Mathematics
1 answer:
cupoosta [38]2 years ago
6 0
<span>Sin (x) = Cos (90 - x)</span>
<span>sin(2A) = cos (90 - 2A)
=cos (3A)
90 - 2A = 3A
5A=90
A=18</span>
You might be interested in
Hi! I need help with this:
arlik [135]
<h3>Answer:  50</h3>

==========================================================

Explanation:

We simply multiply the two values given to us

600*(1/12) = 600/12 = 50

We expect about 50 bulbs to be defective.

Note how if we had 50 bad bulbs, then 50/600 = (1*50)/(12*50) = 1/12 of the batch of 600 bulbs is defective.

5 0
2 years ago
The volume of this prism is 378cm3. What is the length of x First correct answer will get 5 starts and brainliest!
Nitella [24]

Answer:

14cm

Step-by-step explanation:

You divide 378 from 27

4 0
3 years ago
Polygon C and polygon D are similar. The perimeter of polygon C is 192 inches, and the perimeter of polygon D is 48 inches. If o
Marianna [84]

Answer:

B. 2 in.

Step-by-step explanation:

First, put the two perimeters together to form a fraction.

192/48, which can simplify to 4/1

Now, following the order in which you put the perimeters (I used C/D,) set it equal to the sides.

\frac{4}{1}  =  \frac{8}{x}

Now, cross multiply. (multiply 1 and 8, 4 and x.)

4x = 8

Now, solve.

x=2 inches.

3 0
2 years ago
Help me please I’m almost done ayyayayayatayayy
leva [86]

Answer:

4(5j+3j) is 32j

4(3j) is 12j

5j+3j+9j is 17j

Step-by-step explanation:

5 0
2 years ago
Write the place value of 1.059 each decimal​
kirza4 [7]

Answer:

1 x 1+0 x 1/10+5 x 1/100+9 x 1/1000

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
Other questions:
  • In baseball, the equation E=9r/I. Sove for I
    5·1 answer
  • Can Someone help with problems 2,3,4. Please
    9·1 answer
  • Gina recently got an 10% raise on her salary. If Gina used to make $25 per hour, what is her new salary?
    11·1 answer
  • Luke’s Bakery recently spent a total of $69 on new equipment, and their average hourly operating costs are $15. Their average ho
    7·1 answer
  • Write the slope-intercept form of the line that has a slope of 2 and intersects the line, 2x - 3y = 6 at x = 3.
    5·1 answer
  • A garden snail moves<br> 3/5<br> foot in 1/4<br> hour. How far is the snail moving per hour?
    12·2 answers
  • A tissue box in the shape of a rectangular prism has a surface area of 158 square inches . The width is 5 inches and the height
    11·1 answer
  • Which expressions represent the product of a variable and a coefficient? Choose 3 answers: Choose 3 answers: (Choice A) A 11c11c
    11·1 answer
  • In September a clothing store had a sale where you could get 5 scarves for $28.35. In October the price was changed to 7 scarves
    9·1 answer
  • Consider functions f and g<br><br> vvvv
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!