if cos theta + cos²theta = 1 them from that sin²theta+sin⁴theta
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the question is wrong
Step-by-step explanation:
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Answer:
1
Step-by-step explanation:
cos theta=1-cossq. theta
=>cos theta =sin sq. theta
=>put value of sin2 theta in sin 4 theta
=>sin2 theta +cos 2 theta =1
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