cot(tan^(-1)3)=+-13

cot(tan^(-1)3)=(1)/(3)

Evaluate cot (tan ^(-1) 3) .

Evaluate cot (tan ^(-1) 3) .

sec^(2) ( cot ^(-1) 2) + "cosec"^(2) (tan ^(-1)3)=2""(13)/(36)

cot(tan^(-1)sqrt(3))

cot(tan^(-1)sqrt(3))

Show that Sec^2 (cot^-1(2)) + cosec^2(tan^-1 (3)) = 2 13/36

Prove that: tan^(-1)(1)/(7)+tan^(-1)(1)/(13)=tan^(-1)(2)/(9)tan^(-1)+tan^(-1)(1)/(5)+tan^(-1)(1)/(8)=(pi)/(4)tan^(-1)(3)/(4)+tan^(-1)(3)/(5)-tan^(-1)(8)/(19)=(pi)/(4)tan^(-1)(1)/(5)+tan^(-1)(1)/(7)+tan^(-1)(1)/(3)+tan^(-1)(1)/(8)=(pi)/(4)cot^(-1)7+cot^(-1)8+cot^(-1)18=cot^(-1)(1)/(13)

Prove that cot^(-1)(3)-cot^(-1)(4)=cot^(-1)(13)

2cot(cot^(-1)(3)+cot^(-1)(7)+cot^(-1)(13)+cot^(-1)(21)) has the value