Inverse circular functions,Principal values of sin−1x,cos−1x,tan−1x. tan−1x+tan−1y=tan−11−xyx+y, xy<1 π+tan−11−xyx+y, xy>1. Evaluate the following : (a) sin[3π −sin−1(−21 ) ] (b) sin[2π −sin−1(−23 ) ]
The value of cot−1[(1−sinx)−(1+sinx)1−sinx+1+sinx] is
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