5. Plot the point P(t) = ( ,y) on the unit circle in Quadrant IV. (a) Compute the exact value of y as a rational (fractional) expression and a radical. (b) Use the coordinates of the point to give the exact values : cost = sint = tant = sect = csc t = cott = (c) Use a calculator to estimate the measure (in degrees) of the angle t using an inverse trigonometric function