Question 13 of 15 > 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 x= 8 sint, y = 4 cost, t= 4 The equation represents the line tangent to the curve at t= (Type an exact answer, using radicals as needed.) dy The value of at t=- is dx (Type an exact answer, using radicals as needed.) KA 4 dy at this point.