If `cos x+cos y-cos(x+y)=(3)/(2)`, then

Find all the pairs of x,y that satisfy the equation cos x+cos y+cos(x+y)=-(3)/(2)

If cos x+cos y=(3)/(2)+cos(x+y) then for n in I

If x + y = (2pi)/(3)" and cos" x+ "cos"y = (3)/(2) , then

If (cos x)/(cos y)=2 and cos(x-y)=(sqrt(3))/(2) then tan y=

If (cos x)/(cos y)=2 and cos(x-y)=(sqrt(3))/(2) then tan y=sqrt(alpha)-beta value of alpha-beta=

if x+y=(2 pi)/(3) and cos x+cos y=(sqrt(3))/(2) then x,y is equal to:

If cos x+cos y=a and cos2x+cos2y=b then the value of cos x cos y=(lambda a^(2)+mu b-2)/(4) the value of 2 lambda-mu is

If cos x + cos y =2, then value of sin x + sin y is