If `x , y in [0,2pi]a n dsinx+siny=2,` then the value of `x+y` is `pi` (b) `pi/2` (c) `3pi` (d) none of these

If x,y in[0,2 pi] and sin x+sin y=2, then the value of x+y is pi(b)(pi)/(2)(c)3 pi(d) none of these

If x+y=2pi//3 and sin x//siny=2 , then the

If x+y=2pi//3 and sin x//siny=2 , then the

If cos^2 2x+2cos^2x=1,\ x in (-pi,pi), then x can take the values : +-pi/2 (b) +-pi/4 +-(3pi)/4 (d) none of these

If the area of the region bounded by y=sinax, y=0, x=pi/a and x=pi/(3a) is 4, then the positive value of a is (A) 1/2 (B) 2 (C) 5/8 (D) none of these

int_0^pi cos2xlogsinxdx= (A) pi (B) -pi/2 (C) pi/2 (D) none of these

int_0^pi cos2xlogsinxdx= (A) pi (B) -pi/2 (C) pi/2 (D) none of these

If x in [0. (pi)/(2)], y in [0, (pi)/(2)] and sin x + cos y =2, then the value of x+y is equal to........ A) 2pi B) pi C) pi/4 D) pi/2

If x<0,\ y<0 such that x y=1 , then tan^(-1)x+tan^(-1)y equals pi/2 (b) -pi/2 (c) pi (d) none of these

If x<0,\ y<0 such that x y=1 , then tan^(-1)x+tan^(-1)y equals pi/2 (b) -pi/2 (c) pi (d) none of these