Ask question

Ask question

All categories

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?

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

1. 7:4 = 21:x; what is the value of x?<br> A. 12<br> B. 10<br> C. 8<br> D. 6<br> E. 4<br> 8.

Soloha48 [4]

Answer:

x = 12

I hope it's helps you

8 0

2 years ago

In an aquarium 2/5 of the fish or surgeonfish. Of these, 3/4 are yellow tangs. what fraction of all fish in the aquarium or yell

Viktor [21]

Answer:

3/10 of the aquarium are yellow tangs.

Step-by-step explanation:

Given that in an aquarium 2/5 of the fish or surgeonfish and of these, 3/4 are yellow tangs, to determine what fraction of all fish in the aquarium are yellow tangs the following calculation must be performed:

2/5 = 0.40

0.40 x 3/4 = X

1.20 / 4 = X

0.30 = X

0.30 = 3/10

Therefore 3/10 of the aquarium are yellow tangs.

5 0

2 years ago

Find the missing dimension of the cone. Round your answer to the nearest tenth.

exis [7]

Answer:

H=5.0 (to the nearest 10th)

Step-by-step explanation:

$V=\pi r^{2} \frac{h}{3}$

${2} h=3\frac{v}{\pi r^{2} }$ $=3(\frac{13.4}{\pi (1.6^{2} ) } )$ ≈4.99846

7 0

3 years ago

Annika is very popular and tends to get bigger tips. She worked 28 hours and made an average of $14.62 per hour in a month when

aev [14]

Umm where is the ‘chart bellow’?

6 0

2 years ago

3x and 2 are each a(n) ___ in the expression 3x + 2 and the equation 3x + 2 = 8

Amanda [17]

Answer:

The answer is term

Step-by-step explanation:

Glad i could help

5 0

2 years ago