Question

sin 3A = cos 6 A then A = ?​

Answer 1

Answer:

sin 3A = cos 6 A

Explanation:

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Answer 2

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Secondary School Math 13 points

If sin 3a = cos (a-6) where 3a and a-6 are both

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Answers

jaismeen8103

I think question is like this ,

Sin3A = Cos ( A - 6 ) , where 3A and A - 6 are both acute angle then find value of A.

Solution---> ATQ,

Sin3A = Cos ( A - 6 )

We have a formula

Cosθ = Sin ( 90° - θ ) , applying it we get,

=> Sin3A = Sin { 90° - ( A - 6 ) }

=> Sin3A = Sin ( 90° - A + 6 )

=> 3A = 90° - A + 6

=> 3A + A = 96

=> 4A = 96

=> A = 96 / 4

=> A = 24°

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