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

The value of (sin^2""7""1/2""+cos^2""7""1/2""^@)-(sin^2""30^@+cos^2""30^@)+(sin^2""7^@+sin^2""83^@) is equal to (a)3 (b) 3""1/2 (c)2 (d)1

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

The value of sin^(-1)(cos2)-cos^(-1)(sin2)+tan^(-1)(cot4)-cot^(-1)(tan4)+sec^(-1)(cos ec6)-cos ec^(-1)(sec6

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

The value of cos15^(@)cos(7(1)/(2))^(@)sin(7(1)/(2))^(@) is

Principal value of cos^(-1)[cos((7pi)/(6))] is

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