Q6 of 23 Page 2

Find the values of the following:

[CBSE 2013]

Let us consider tan-1(1) = x then we get


We know that range of the principle value branch of tan-1 is


Therefore,


Let



We know that range of the principle value branch of cos-1 is [0, π]


Therefore,


Let



We know that range of the principle value branch of sin-1 is


Therefore


Now,



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