Parametric Differentiation The parametric equations for the motion of a charged particle released from rest in electric and magnetic fields at right angles to each other take the forms x = a (0 – sin...

Please help me solve this one. Thanks

Extracted text: Parametric Differentiation The parametric equations for the motion of a charged particle released from rest in electric and magnetic fields at right angles to each other take the forms x = a (0 – sin 0),y = a (1 – cos 0). Show that the tangent to the curve has slope cot (). Use this result at a few calculated values of x and y to sketch the form of the particle's trajectory.