English, asked by fattusinghsolankidmd, 6 months ago

Expand 2 sin 3x cos 4x

Answers

Answered by vishukotla

2

You must be aware of the formula

sin(A+B)=sinAcosB+cosAsinB

cos(A+B)=cosAcosB−sinAsinB

use this formula..

hope it helps..

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