Question

Find the value of 3 tan squared26°-3 cosec squared 64°

Answer 1

Hello........

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@Rohit

Answer 2

= 3 tan² 26° - 3 cosec² 64°

= 3 tan² 26° - 3 cosec² (90° - 26°)

( By cosec²Θ = sec²(90 - Θ))

= 3 tan² 26° - 3 sec² 26°

= 3(tan² 26° - sec² 26°)

( By identity tan²Θ - sec²Θ = -1)

= 3(-1)

= -3 

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