7) a) If sin t = 3/5 and the terminal point for t is in Quadrant 2, find the values of all the trigonometric functions. b) Find sin 2t and cos 2t. 8) Prove that cos (2-u = sinu 9) A circular arc of length 3 ft subtends a central angle of 250. Find the radius of the circle. 10) The area of a circle is 72 cm . Find the area of a sector of this circle that subtends a central angle It/6 rad