Math, asked by kalyanigeddam1328, 5 hours ago

cos^4θ-sin^4θ-2cos^2θ

Answers

Answered by Anonymous

0

Answer:

Step-by-step explanation:

2cos2∅-2cot(2∅-8∅).

Answered by hemant867

0

cos 4 θ+sin 4θ+2cos 2θsin 2

=(cos 2θ+sin 2 θ) 2

=1

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