Math, asked by shannoncoutinho, 5 months ago

2Sin2A=root3. And A is acute find Cos 3A

Answers

Answered by srisatya26

3

Step-by-step explanation:

2sin2A= roor3

sin2A=root3/2

sin2A=sin60

2A=60

A=30

cos3A=cos3×30=cos90

=0

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