beta*cos^(4)A-sin^(4)A" is equal to "

What is ( cos ^(4) A - sin ^(4) A)/( cos ^(2) A - sin ^(2) A) equal to ?

The value of 4 sin A cos^(3) A- 4 cos A sin^(3) A is equal to

The value of 4 sin A cos ^3 A -4 cos sin^3 A is equal to

sin^(4)alpha+4cos^(4)beta+2=4sqrt(2)sin alpha cos beta;alpha,beta in[0,pi], then cos(alpha+beta)-cos(alpha-beta) is equal to :

If sin(theta+alpha)=a and sin(theta+beta)=b then cos2(alpha-beta)-4abcos(alpha-beta) is equal to

Given that sin beta =(4)/(5), 0 lt beta lt pi and tan beta gt 0, " then " ((3 sin(alpha+beta)-4 cos (alpha+beta))"cosec"alpha is equal to :

Given that sin beta =(4)/(5), 0 lt beta lt pi and tan beta gt 0, " then " ((3 sin(alpha+beta)-4 cos (alpha+beta))"cosec"alpha is equal to :

Given that sin beta =(4)/(5), 0 lt beta lt pi and tan beta gt 0, " then " ((3 sin(alpha+beta)-4 cos (alpha+beta))"cosec"alpha is equal to :

If (cos prop )/( sin prop + cos beta) + ( cos beta)/( sin beta - cos prop) = ( x)/( sin prop - cos beta) + (cos beta)/( sin beta+ cos prop) then 'x' is equal to :