19. ABC is a triangle with m(ZA)= 60°, m(ZB)=45°. If AC=20, find the length of BC (Hint: Draw a triangle and use LOS) A. 10/2 В. 20/2 C. 203 20-/6 D. 3 E. 10/5

Trigonometry (11th Edition)
11th Edition
ISBN:9780134217437
Author:Margaret L. Lial, John Hornsby, David I. Schneider, Callie Daniels
Publisher:Margaret L. Lial, John Hornsby, David I. Schneider, Callie Daniels
Chapter1: Trigonometric Functions
Section: Chapter Questions
Problem 1RE: 1. Give the measures of the complement and the supplement of an angle measuring 35°.
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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. \( 10 \sqrt{6} \)
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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