CPM Homework Help : A2C Problem 7-161

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Home > A2C > Chapter 7 > Lesson 7.3.1 > Problem 7-161

7-161.

Find m∠C in each triangle below. Homework Help ✎

Step (a):

Use the Law of Cosines: 8² = 10² + 12² − 2(10)(12) cos C

Answer (a):

C ≈ 41.41°

Hint (b):

$\text{Remember that tan }C=\frac{\text{opp.}}{\text{adj.}}$

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