Problem 3 a and y are angles in quadrants 1 2 and 3 respectively such that tan a tan B COS Y This time we also that 27 a y 47 Evaluate the following a b c d b COS c tan sin sec 2 sqrt 2 4 sin 9 COS tan 2 0 2 Problem 4 0 is an angle in quadrant 3 such that 0 and such that cos 0 a sqrt 7 sqrt 5 14 5 02 0 3 2 Calculate the following