The function `y-a(1-cos x)` is maximum when `x` is equal to

The function y = a(1-cosx) is maximum when x is equal to

The function y=1-cos x is maximum , when x=

The function y=1-cos x is maximum , when x=...a) 0 b) pi/2 c) pi d) -pi/6

Let y = a(1 - cos theta), x = a(theta- sin theta) , then y regarded as a function of x is maximum when x equals to

Let y=a(1-cos theta), x = a(theta - sin theta) . Then y regarded as a function of x is maximum when theta equals

Prove that at x=(pi)/(3), function sin x(1+cos x) is maximum.Also find the maximum value of the function.

The function x (x-1) (x-2) attains its maximum value when x is

For a function y = x cos x then ( d^(2) y)/( dx^(2)) is equal to