Question

sin4theta -cos4 theta=​

Answer 1

= sin⁴ theta +cos⁴ theta

= (sin²theta + cos²theta)²- 2sin²theta cos²theta

= 1-1/2(sin²2theta)²

= [ cos²theta +sin²theta =1 ]

= minimum value of sin² 2theta is 0

= sin⁴theta +cos⁴theta

= 1-0

= sin⁴theta+ cos⁴ theta =1

Hence the sin⁴ theta +cos⁴ theta is 1

I hope I am helped you

Answer 2

Answer:

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