Math, asked by bsakthi7, 1 year ago

4cos6xcos4xcos2x =

1) cos12x+cos8x+cos4x+1
2)cos12x+cos8x-cos4x+1
3)cos12x-cos8x+cos4x+1
4)cos12x-cos8x-c0s4x-1

Answers

Answered by hrishabh7

0

1).cos12x+cos 8x+cos 4x+1.

bsakthi7: Can you please show me how it is derived ?

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