I've tried doing it, but every time i don't get any of the options.
what is the simplified form of the expression
a.) sec x
b.) cos x + sin x
c.) cos x
d.) 2cos^3x

Find the exact value of each of the following. in each case, show your work and explain the steps you take to find the value. (a) sin 17π/6 (b) tan 13π/4 (c) sec 11π/3

Ihave a triangle with a 60 degree angle. lets use d for that angle. what are the values of e and f if d is 60 degrees? and what do you notice about the values of e and f?

There were 25 students who answered to a survey about sports. four-fifths of them like football. how many students like football?