For the curve `x = 3cos theta, y=3 sin theta, 0le theta le pi,` the tangent is parallel to the x-axis, where `theta =`

For the curve y=3 sin theta cos theta, x=e^(theta) sin theta, 0 le theta le pi , the tangent is paralle to x-axis when theta is

For the curve y=3sin theta cos theta,x=e^(theta)sin theta,0<=theta<=pi, the tangent is parallel to x-axis when bar(theta) is :

sin theta -2 = cos2theta when 0 le theta le 2pi

Find the point on the curves x = a( theta - sin theta ) and y=a(1 - cos theta ), at which the tangent is parallel to X-axis.

If sin theta + cos theta = (1)/(5) and 0 le theta le pi , then tan theta is

sin theta + sin 5 theta = sin 3theta (0 le theta le 2pi)

Solve for theta,2 cos^2 theta+sin theta-1=0,0 le theta le pi/2

If sin 7theta + sin 4theta + sin theta = 0, 0 le theta le pi//2 , then theta =