oysin?0-+sin'0 = 1 2031 (A8 (¥, tan‘6) — tan’0 = 1 – InterviewSolution

1.

oysin?0-+sin'0 = 1 2031 (A8 (¥, tan‘6) — tan’0 = 1

Answer»

Dividing the given equation by cos^4 theta we get,

tan^4 theta + (tan^2 theta) x (sec^2 theta) = sec^4 theta

changing sec into tan by formula

sec^2 theta = 1+ tan^2 theta

we get the answer 1

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