11th Grade Law Of Sines Quizzes, Questions & Answers

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Curious how the Law of Sines applies beyond the classroom? In this quiz, you’ll use trigonometry to solve practical problems involving bridges, roofs, sails, and triangular plots. You’ll learn how to set up...

Questions: 20 | Attempts: 10 | Last updated: Nov 11, 2025

Sample Question 1
A surveyor measures ∠A = 42°, ∠B = 68°, and side a = 120 m in a triangular plot. Find side b.

166 m

159 m

160 m

175 m

Sample Question 2
A bridge support forms △LMN with ∠L = 40°, ∠N = 75°, and side l = 8 m. Find side n.

11.2 m

12.0 m

12.8 m

13.6 m

Sample Question 3
A sail has triangular shape △ABC with ∠A = 30°, ∠C = 120°, and side a = 7 m. Find side c.

11.9 m

12.1 m

12.3 m

12.5 m