Find the slope of a line joining the points `(sin theta , -cos theta )` and `(-sin theta , cos theta)` with the origin

Find the slope of the line joining the points (a cos theta , b sin theta) and (a cos phi, b sin phi)

If sin theta.cos theta = k then find the sin theta + cos theta .

Find the distance between the points : (cos theta, sin theta), (sin theta, cos theta)

Find the distance between the points : (cos theta, sin theta), (sin theta, cos theta)

(sin theta+cos theta)(1-sin theta cos theta)=sin^3 theta+cos^3 theta

Find perpendicular distance of the line joining the points (cos theta, sin theta) and (cos phi, sin phi) from the origin.

The distance of the mid point of the line joining the points (a sin theta, 0)and (0, a cos theta) from the origin is

The distance of the mid point of the line joining the points (a sin theta, 0)and (0, a cos theta) from the origin is