An angle measures 120 degrees. Describe how to use special right triangles and the unit circle as tools to calculate the sine and cosine of this angle.

In simplified exponential notation, the expression a^2•a^-3•a 1/a 0

According to statistics a person will devote 32 years to sleeping and watching tv. the number of years sleeping will exceed the number of years watching tv by 18. over a lifetime, how many years will the person spend on each of these activities

Find the solution(s) to the system of equations. select all that apply y=x^2-1 y=2x-2