If `theta=3alpha` and `sin theta=(a)/(sqrt(a^(2)+b^(2))` , the value of the expression `a co sec alpha-b sec alpha` is

If theta=3alpha and sin theta =(a)/(sqrt(a^(2)+beta^(2))) ,, the value of the expression a cosec alpha - b sec alpha is

If cos(theta-alpha) = a and cos(theta-beta) = b then the value of sin^2(alpha-beta) + 2ab cos(alpha-beta)

If cos(theta-alpha) = a and cos(theta-beta) = b then the value of sin^2(alpha-beta) + 2ab cos(alpha-beta)

If cos(theta-alpha) = a and cos(theta-beta) = b then the value of sin^2(alpha-beta) + 2ab cos(alpha-beta)

If sin theta = 3 sin ( theta + 2 alpha) , then the value of tan (theta + alpha ) + 2 tan alpha is

If sin theta = 3 sin (theta + 2 alpha) , then the value of tan (theta + alpha) + 2 tan alpha is

If sec^(2)alpha+cos^(2)alpha=2 , then find the value of sec alpha+ cos alpha .

If cos (theta - alpha) = a, cos (theta - beta) = b , then the value of sin^(2) (alpha - beta) + 2ab cos (alpha - beta) is

If sin (theta + alpha) = a and sin (theta + beta) = b,"then" cos 2 (alpha - beta) - 4ab cos (alpha - beta) =

If cos(theta-alpha)=a and cos(theta-beta)=b then the value of sin^(2)(alpha-beta)+2ab cos(alpha-beta)