Question

sin theta + sin² theta =1, then cos² theta + cos⁴ theta is equal to______​

Answer 1

Answer:

Here is your answer...

Given,

sine sin^2 0 = 1

or, sine + sin^2 0 = sin^2 + cos^2 0

or, cos^2 0= sin 0, ....(1), squaring both side

or, cos^4 = sin^2 0....(2), adding equation (1) & (2),

cos^2 0+cos^4 0 = sin e + sin^2 0 = 1 ( given)

Therefore cos^2 0 + cos^4 0= 1

Step-by-step explanation:

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