1.

The number of solutions of the equationcosec−1(sinθ+4sin2θ)+sec−1(−1+6sinθ)=π2, where θ∈[0,5π] is

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The number of solutions of the equation

cosec1(sinθ+4sin2θ)+sec1(1+6sinθ)=π2, where θ[0,5π] is



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