### Home > CALC > Chapter 1 > Lesson 1.2.1 > Problem 1-26

1-26.

Find the exact value of each of the following trig expressions.

Recall your unit circle, or the graph of

.

Since reference point:, will equal EITHER or .

Which one?

Now simplify!

Now simplify!

Careful!

. What does that mean about the reciprocal of ?