Value of `sin^6 7(1/2)^@+cos^6 7(1/2)^@` is

The value of cos 15^@ cos 7 1^@/2 sin 7 1^@/2 is:

The value of cos 15^(@) cos 7 ((1)/(2))^(@)sin 7 ((1)/(2))^(@) is

Find the value of sin (1/2 cos^(-1) (1/7))

Principal value of : sin^(-1) (-sqrt3/2)+cos^(-1) (cos ((7pi)/6)) is :

The value of sin^(-1)(-3/2)+cos^(-1)(cos\ (7pi)/6) is a. (5pi)/6 b. pi/2 c. (3pi)/2 d. none of these

The principal value of sin^(-1)(-sqrt(3)//2)+cos^(-1)(cos(7pi//6)) is

The value of sin^(-1)(-sqrt3/2)+cos^(-1)(cos\ (7pi)/6) is a. (5pi)/6 b. pi/2 c. (3pi)/2 d. none of these

The principal value of sin^-1 (-sqrt3/2)+cos^-1 cos((7pi)/6) is

Value of 2 sin ^(2) "" (pi)/(6) + cosec ^(2) "" (7pi)/(6) .cos^(2) "" (pi)/(3) is (m)/(m-1). The value of 'm' is