Question

anyone know the answer to this precalculus question?

Answer 1

hi igbasallote

Answer 2

You need to look up the known values for the sin and cos function at pi/6 and pi/3. Then, remember that the values are kind of similar, but with signs changed in various ways, when you do things like add pi/2, pi, 3pi/2 etc... draw the unit circle and draw in different angles to remember how that is calculated...

Answer 3

See that here sin(pi/6) = sin(5pi/6).... Do something similar for the different parts of your question...