1.

If x = tan^(-1) 1 -cos^(-1) ( - 1/2) + sin^(-1) 1/2 , y = cos (1/2 cos^(-1) (1/8)), then

Answer»

` X = PI y`
` y = pi x`
` TAN x = - (4//3) y`
` tan x = ( 4//3) y`

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