Find the value of A for which `cos A sin(A- pi/6)` is maximum.

Find the value of (cos pi+i sin pi)

The value of theta ( 0 lt theta lt (pi)/(2)) for which cos theta sin (theta - (pi)/(6)) is maximum is-

Find the value of : cos{sin("sin"^(-1)(pi)/6)}

Find the value of : cos{sin("sin"^(-1)(pi)/6)}

Find the value of : cos{sin("sin"^(-1)(pi)/6)}

Find the value of : cos{sin("sin"^(-1)(pi)/6)}

Find the maximum value of sin x cos x.

Find the value of (cos .pi/7 cos . pi/17 - sin .pi/7 sin . pi/17)

Find the value of the following :- (a)sin((pi)/(6)),(b)cos ((pi)/(4))

Find the value of (i) cos 15 pi (ii) sin 16 pi (iii) cos (-pi) (iv) sin 5 pi (v) tan ((5pi)/(4)) (vi) sec 6 pi