cos[tan-1{sin(cot-1 x)}] = [(1 + x^2)/(1 - x^2)]^-1
rnprove it!!!!
Taking L.H.S.,
∴ From (1), we get –
From (3),
Our aim is to find the value of cos y.
∴ From (5),
Hence, the R.H.S. given by you seems to be incorrect. The value on the R.H.S. in the statement should be .
Please check it again and then do get back to us.