Question 6 . i) 240 a) Use a unit circle diagram to find exact value for sin 0 and cos0 equal to : ii) - 60 b) Use a unit circle diagram to find exact value for sin 0 and coso equal to : i ) ii) Question 7. a) Use a unit circle diagram to find all angles between 0 and 360 which have: i) a cosine of ii) a sine of -1 b) Use a unit circle diagram to find all angles 0 in radians if 0