Which expression is equivalent to cos 150°? three choices are:
A. cos 30°
B. cos 330°
C. cos (-30°)
D. cos (-210°)​

Which of the following is equal to the rational expression when x is not equal to -2 or -6?

Abacteria population of doubles in size every 5 hours . after 5 hours , the sample contains 2,000 bactria . which equation best models y, the population size after x hours ?

Two angles are complimentary, as shown in the diagram below part a: use the definition of complimentary angles to set up an equation that can be used to solve for the value of x. part b: solve for the value of x. in your final answer, include all of your calculations.