Math, asked by mehak1053, 11 months ago

pls solve these equtions

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Answered by hridyapshaji

1

cos 4x = 1-2 sin²2x ........... (cos 2x = 1- 2 sin²x)

=1- 2(2 sinx cosx)² ..............(sin 2x = 2sin x cos x)

= 1-8 sin²x cos²x

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