1.

Evaluate sec^4A-sec^2=tan^4+tan2A​

Answer»

HI !

From LHS

GIVEN that , sec⁴¢ - sec²¢

sec²¢ ( sec²¢ - 1 )

sec²¢ ( tan²¢)

(1+ tan²¢ ) tan²¢

tan²¢ + tan⁴¢ Proved LHS = RHS ,.

Used formula, = sec²¢ - 1 = tan²¢

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HOPE it's helpful



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