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If -1lt=x , ylt=1 such that sin^(-1)x+si...

If `-1lt=x` , `ylt=1` such that `sin^(-1)x+sin^(-1)y=pi/2` , find the value of `cos^(-1)x+cos^(-1)y` .

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  18. If sin^(-1)x+sin^(-1)y=pi/3 and cos^(-1)x-cos^(-1)y=pi/6 , find the va...

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  19. If cot(cos^(-1)(3/5)+sin^(-1)x)=0 , find the values of xdot

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