Verify cos(180+x)=-cosx
note the 180 is in degrees.

What is the least common factor of 6 and 8

Find the cosine function that is represented in the graph.

It took alice 5 5/6 hours to drive to her grandparents' house for . on the way home, she ran into traffic and it took her 7 3/8 hours. how much longer did the return trip take? write your answer as a proper fraction or mixed number in simplest form. the trip home took __hours longer. ?