RRB Group D 10-Dec-2018 Shift 1 Solved Paper

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Question : 99 of 100

Marks: +1, -0

cosecθ=α⇒cosec

^{-1}

α=θ and secϕ=β⇒sec

^{-1}

β=ϕ. Then the value of cosec

^{-1}

γ+sec

^{-1}

γ= ?

45°
90°
30°
60°

Solution:

sec

^{-1}

γ=90°-cosec

^{-1}

γ
than cosec

^{-1}

γ+sec

^{-1}

γ
=cosec

^{-1}

γ+90°-cosec

^{-1}

γ=90°

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