if 1/2 sin-1(3sin2y / 5+4cos2y)=tan-1x,then prove the value of x is 1/3 tany.solve the inequality sin-1(sin5)x2-4x ,find the value of x belongs to?

The second equation given by you is not clear. Kindly write everything very clearly so that we could solve it for you. Please send the second question again

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