Find the slope of the tangent line of the curve r theta ie d

Find the slope of the tangent line of the curve r= theta (i.e., dy/dx)

A. (theta cos theta +theta sintheta)/(-theta sintheta +theta costheta)

B. (f(theta)costheta +theta sintheta)/(-theta sintheta +costheta)

C.(theta costheta +sintheta)/(-theta sintheta +costheta)

D. None of the Above

Solution

C.(theta costheta +sintheta)/(-theta sintheta +costheta)