`cos^(- 1){cos2cot^(- 1)(sqrt(2)-1)}`

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cos^(-1)(cos(2cot^(-1)(sqrt(2)-1)))

cos^(-1)(cos(2cot^(-1)(sqrt(2)-1))) is equal to sqrt(2)-1( b) (pi)/(4)(c)(3 pi)/(4) (d) none of these

cos^(-1)("cos"(2cot^(-1)(sqrt(2)-1))) is equal to (a) sqrt(2)-1 (b) pi/4 (c) (3pi)/4 (d) none of these

cos^(-1)("cos"(2cot^(-1)(sqrt(2)-1))) is equal to sqrt(2)-1 (b) pi/4 (c) (3pi)/4 (d) non eoft h e s e

cos^(-1)[cos{2cot^(-1)(sqrt2-1)}] is equal to a) sqrt2-1 b) pi/4 c) (3pi)/4 d)None of these

cos^(-1) (cos (2 cot^(-1) (sqrt2 -1))) is equal to

cos^(-1) ( cos( 2 cot^(-1)(sqrt2 - 1))) is equal to

cos^(-1) (cos (2 cot^(-1) (sqrt2 -1))) is equal to