Question

value of A if cos3A(2sin2A1)=0
if u give me right one I'll ask my friends to like and mark as brainliest and follow you​

Answer 1

Answer:

I think U forgot to write A-1,if then it is ur answer

Cos3A(2sin 2A-1)=0

cos3A=0 n 2sin^2 A-1=0

3A=90° n sin ^2A=sin30

A=30° n. 2A=30° >

A= 15°

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