CPM Homework Help : INT3 Problem 9-111

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Home > INT3 > Chapter Ch9 > Lesson 9.2.2 > Problem 9-111

9-111.

Evaluate each of the following expressions exactly.

Hint:

Draw a unit circle and locate each angle. Draw a reference triangle. Use special triangles.

tan $( \frac { 2 \pi } { 3 } )$
Answer (a):
$-\sqrt{3}$

tan $( \frac { 7 \pi } { 6 } )$
Answer (b):
$\frac{\sqrt{3}}{3}$

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