Hello I need help with this question please , thank you

Find an equation for the line tangent to the curve at the point defined by the given value of t. Also, find the value of em dx 2 at this point. x = 4 cost, y = 4 sint, t= - A 1 0 The equation represents the line tangent to the curve at t = - 4 (Type an exact answer, using radicals as needed.) 10 The value of at t= IS dx 2 4 (Type an exact answer, using radicals as needed.) 1 of