Math, asked by akki824, 9 months ago

tan^4+ sec² = sec^4 - tan^2

Answers

Answered by Anonymous

1

Step-by-step explanation:

tan⁴ + Sec²

(Sec²-1)² + Sec²

Sec⁴ - 2Sec² + 1 + Sec²

Sec⁴ + 1 - Sec²

Sec⁴ + 1 - (1 + tan²)

Sec⁴ + 1 - 1 - tan²

Sec⁴ - tan²

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