If `alpha in [(pi)/(2),pi]` then the value of
`sqrt(1+ sin alpha)-sqrt(1 - sin alpha)` is equal to

If alpha in [pi/2,pi] , then the value of sqrt(1+sin alpha)- sqrt(1-sinalpha) is equal to:

If alpha=(pi)/(17), then the value of (sin21 alpha-sin alpha)/(sin16 alpha+sin4 alpha) is equal to

If alpha in(-(3 pi)/(2),-pi), then the value of tan^(-1)(cot alpha)-cot^(-1)(tan alpha)+sin^(-1)(sin alpha)+cos^(-1)(cot alpha) is equal to (a)2 pi+alpha(b)pi+alpha(c)0(d)pi-alpha

If alpha in (-(3pi)/2,-pi) , then the value of tan^(-1)(cot alpha)-cot^(-1)(tan alpha)+sin^(-1)(sin alpha)+cos^(-1)(cos alpha) is equal to

If pi lt alpha lt (3pi)/2 then find the value of expression sqrt(4 sin^4 alpha+ sin^2 2alpha)+ 4 cos^2(pi/4- alpha/2)

If pi lt alpha lt (3pi)/2 then find the value of expression sqrt(4 sin^4 alpha+ sin^2 2alpha)+ 4 cos^2(pi/4- alpha/2)

The set of all possible values of alpha in [-pi,pi] such that sqrt((1-sinalpha)/(1+sinalpha)) is equal to sec alpha-tanalpha, is

If sqrt2sin (60^@ -alpha)= 1 , then alpha is :

If alpha in[-pi, pi] such that sqrt((1-sin alpha)/(1+sin alpha))=sec alpha-tan alpha Then