Here's the question:
State an equivalent expression for in terms of the related acute angle.
The answer is
What is the step-by-step solution. Thanks!
the reference angle for is .
is in the 3rd quadrant, and so we get a negative answer. since the secant function is negative in the second and third quadrant, the other reference angle that we could take is
draw the unit circle at draw these angles in to see what's going on. note that and make an angle of with the negative x-axis.