Math, asked by nandi17052003, 1 year ago

Sin2A =cos3A
Find the value of a..

Answers

Answered by aditi1382

9

Sin (x) = Cos (90 - x)
sin (2A) = cos (90 - 2A)
= cos (3A)
90 - 2A = 3A
or 5A=90 or A=18

Answered by singinggirlam

3

Answer:

sin2A=cos3A

cos(90-2A)=cos3A

90-2A=3A

90=5A

90/5=A

Thus, A=18°

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