Evaluate `tan^(-1)[sin(-(pi)/2)]`

tan^(-1)[sin(-pi/2)]=pi/4 .

Find the principal value of tan^(-1){sin(-(pi)/(2))}

Find the principal value of tan^(-1){sin(-pi/2)}

Find the value of : tan ^(-1) sin (-(pi)/(2))

Evaluate the principal value of   v = tan^(-1)[sin(-(pi)/(2))] is:

Evaluate tan^(-1)((3sin 2alpha)/(5+3cos2alpha)) +tan^(-1)((1)/(4)tan alpha) , where, -(pi)/(2) lt alpha lt (pi)/(2) .

Find the value of tan^(-1)(-1/(sqrt(3)))+cot^(-1)((1)/(sqrt(3))) + tan^(-1)[sin((-pi)/(2))] .

Find the value of tan^(-1)(-1/sqrt3)+cot^(-1)(1/sqrt3)+tan^(-1)[sin((-pi)/2)]

Evaluate: tan^(- 1)(-1/(sqrt(3)))+tan^(- 1)(-sqrt(3))+tan^(- 1)(sin(-pi/2))

Find the value of tan^(-1)(-1/(sqrt(3)))+cot^(-1)((1)/(sqrt(3))) + tan^(-1)[sin'((-pi)/(2))] .