" ( "1-(sin^(2)y)/(1+cos y)+(1+cos y)/(sin y)-(sin y)/(1-cos y)" is equal to "

1-(sin^(2)y)/(1+ cos y) + (1+ cosy)/( sin y) - (siny)/(1- cos y) =

The value of the expression 1- (sin^(2)y)/(1+ cos y) + (1+ cos y)/(sin y) -(sin y)/(1- cos y) is

The value of the expression 1- (sin^(2)y)/(1+ cos y) + (1+ cos y)/(sin y) -(sin y)/(1- cos y) is .................. A) 0 B) 1 C) sin y D) cos y

What ( sin x cos y + cos x sin y) (sin x cos y - cos x sin y) equal to ?

The value of (sin x cos y + cos x sin y)^2+(cos x cos y -sin x sin y)^2 is equal to

If (cos^(4)x)/(cos^(2)y)+(sin^(4)x)/(sin^(2)y)=1 , then (cos^(4)y)/(cos^(2)x)+(sin^(4)y)/(sin^(2)y) equal :

If sin x + sin y = (7) / (5) and cos x + cos y = (1) / (5) then sin (x + y) equal to

If (sin x) (sin y) = 1, then (cos x) (cos y) =?

If x = sin^(-1)(sin 10) and y = cos^(-1)(cos 10) then y - x is equal to:

If x = sin^(-1)(sin 10) and y = cos^(-1)(cos 10) then y - x is equal to: