4. Use the trigonometric identities to find the exact value of each expression. 1 a. cos(216°) cos(546°)+sin(216°) sin(5
Posted: Tue May 10, 2022 9:05 am
4. Use the trigonometric identities to find the exact value of each expression. 1 a. cos(216°) cos(546°)+sin(216°) sin(546) 117 b. sin (12) - sin (- 5