The Law of Sines
Grade 9 · Math · 45 min· G.srt.c.5.c
What's Included
Learning Objective
I can apply the Law of Sines to find missing angles and sides in non-right triangles.
Warm-Up Video
Unknown Channel · 5:00
Law of sines | Trig identities and examples | Trigonometry | Khan Academy
Practice Questions
7 questions · Short answer
Exit Ticket
Quick comprehension check
“In triangle ABC, angle A measures 40°, angle B measures 70°, and side a (opposite angle A) is 10 units long. Use the Law of Sines to find the length of side b (opposite angle B). Show all work. In triangle DEF, angle D measures 55°, angle E measures 85°, and side d (opposite angle D) is 15 units long. Use the Law of Sines to find the length of side e (opposite angle E). Show all work.”
Teacher Guide
Get the complete package:
- Answer keys for all questions
- Differentiation strategies
- Extension activities
- Printable student handouts
