Evaluate each of the following expressions by using special right triangles and the unit circle (give exact values), a. sin(4pi/3)
b. cos(11pi/3)
c. sin ( -5pi/6 )
d. cos (-2pi/3)

If you double the input of a function and it results in half the output, and if you triple the input and it results in a third of the output, what can be guessed about the function? check all that apply.