Answer:
a. sin 300 = -∛3/2, cos 300 = 1/2
b. sin -225 = √2/2, cos -225 = √2/2
c. sin 5π/6 = 1/2, cos 5π/6 = -3√2
d. sin -4π/3 = √3/2, cos -4π/3 = -1/2
Step-by-step explanation:
See unit circle
