I really need help with my assignment.

1. Given an angle B in standard position as shown with the unit circle. Use the given figure (not a calculator) to approximate O.5- a) sin B 0.5 b) cos B -0.5- c) tan B 2. a) Sketch the terminal side of the angle t = - in standard position. b) Find the radian measure of an angle in standard position that has measure between 0 and 2nt and is coterminal with the angle in part (a)