Question

prove that sin 4 theta + cos 4 theta by 1 - 2 sin square theta cos square theta is equal to 1​

Answer 1

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Answer 2

Answer:LHS=RHS

Step-by-step explanation:

(sin^4€ + 2sin^2€cos^2€ + cos^2€) -2sin^2€cos^2€

(sin^2€ +cos^2€)^2-2sin^2€cos^2€

1- 2sin^2€cos^2€ = RHS