Math, asked by saikiran6677, 1 year ago

if sin2a=2sina*cosaSO,sin4a=?

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Answered by Madhvendra13

0

sin4a= 2sin2a*Cos2a
this is your answer

Answered by gakul57

0

Sin2(2a)=2sin2acos2a
=2.2sinacosa(cos square a - sin square a)
=4sinacos qube a - 4sin qube a cosa

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