## Unit Circle Quiz Practice

Questions and Answers to Learn 1) Based on your unit circle cos(0o)= 1 0 -1 1/2 2) Based on your unit circle sin(90o)= 1 0 -1 1/2 3) sin(5π/3)= 1/2 -√3/2 √3/2 -1/2 4) sin(7π/4) 1/2 -√2/2 √2/2 -1/2 5) sin(3π/2) 0 1 -1 1/2 6) Find the exact value of cosine 135º. – √2/2 …