Question

2sin4tita.cos2tita Express the followingllowing as a sum or difference between of two trigonometric ratios
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Answer 1

Heya!!

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2 { 1/2 ( Sin ( 4x + 2x ) + Sin ( 4x - 2x ) }

=>

2{ 1/2 ( Sin 6x + Sin 2x ) }

=>

Sin 6x + Sin 2x

Where x = theta.

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Sin A × Cos B =

1/2 { Sin ( A + B ) + Sin ( A - B ) }

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