1.

Sec ^4 theta -sec^2 theta +tan^2 theta​

Answer»

-STEP EXPLANATION: Sec⁴ THETA - Sec² theta + tan² theta Sec² theta (Sec² theta - 1) + tan² theta Sec² theta (1 + tan²theta - 1) + tan²theta Sec²theta * tan²theta + tan² theta tan²theta(Sec²theta + 1) tan²theta ( 2 + tan² theta) 2tan² theta + tan⁴ theta



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