Question

sin° + sin^2° =1 Then prove that

cos^2° + cos^4° = 1​

Answer 1

Answer:

sin@+sin²@=1

sin@=1-sin²@

sin@=cos²@

square both sides.

sin²@=cos⁴@

1-cos²@=cos⁴@

so,

cos²@+cos⁴@=1

Answer 2

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Hope it helps!

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