Prove Laws of Sines and Cosines
Start lessonBegins with Prove laws sines cosines · Slides
Teacher tools for this standard
Lesson Plan · Guided Notes · Exit Ticket · Re-teach · Homework
Teacher tools for this standard
Lesson Plan · Guided Notes · Exit Ticket · Re-teach · Homework
- Lesson Plan →Objectives, pacing and practice, built from this lesson's brief.
- Guided Notes →One page your students fill in and keep.
- Exit Ticket →Three items at the end of class. No student accounts.
- Re-teach →After an exit ticket: who missed what, and what to do tomorrow.
- Homework →Assign practice; it grades itself.
HSG.SRT.D.10
**HSG.SRT.D.10**: (+) Prove the Laws of Sines and Cosines and use them to solve problems.
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HSG.SRT.D.10: (+) Prove the Laws of Sines and Cosines and use them to solve problems.
What you'll learn
- State the Law of Sines and explain its geometric meaning
- Prove the Law of Sines using the altitude method
- State the Law of Cosines and explain how it generalizes the Pythagorean Theorem
- Prove the Law of Cosines using coordinate geometry and the Pythagorean identity
- Use the Law of Sines to solve triangles given AAS, ASA, or SSA information
- Use the Law of Cosines to solve triangles given SAS or SSS information
- Distinguish between when to apply Law of Sines vs. Law of Cosines based on given information
Slides
Step through the lesson, or watch it as a narrated video • 2 slide decks
1
Prove laws sines cosines
✓ Start here2
Solve triangles ambiguous case
Practice
Try it on your own
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