Trigonometry (11th Edition)
Trigonometry (11th Edition)
11th Edition
ISBN: 9780134217437
Author: Margaret L. Lial, John Hornsby, David I. Schneider, Callie Daniels
Publisher: PEARSON
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do NOT use a calculator. there is only one answer choice. ANSWER MUST MATCH ONE OF THE ANSWER CHOICES

**Problem 19:** ABC is a triangle with \( m(\angle A) = 60^\circ \) and \( m(\angle B) = 45^\circ \). If \( AC = 20 \), find the length of \( BC \).

**Hint:** Draw a triangle and use the Law of Sines (LOS).

**Options:**

A. \( 10 \sqrt{2} \)

B. \( 20 \sqrt{2} \)

C. \( 20 \sqrt{3} \)

D. \(\frac{20 \sqrt{6}}{3} \)

E. \( 10 \sqrt{6} \)
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Transcribed Image Text:**Problem 19:** ABC is a triangle with \( m(\angle A) = 60^\circ \) and \( m(\angle B) = 45^\circ \). If \( AC = 20 \), find the length of \( BC \). **Hint:** Draw a triangle and use the Law of Sines (LOS). **Options:** A. \( 10 \sqrt{2} \) B. \( 20 \sqrt{2} \) C. \( 20 \sqrt{3} \) D. \(\frac{20 \sqrt{6}}{3} \) E. \( 10 \sqrt{6} \)
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