Graphing Sine and Cosine with the Unit Circle
Grade 9Math45 min
aligned to A2p.mgsr.1.2
Learning Objective
I can construct the graphs of y = sin(θ) and y = cos(θ) by transferring coordinates from the unit circle.
Lesson Flow
Watch Video
Trig Visualized: One Diagram to Rule them All (six trig functions in one diagram)
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Practice
2 questions • Short answer
Exit Ticket
“On the unit circle, what is the y-coordinate at θ = π/2? How does this value relate to the graph of y = sin(θ)? On the unit circle, what is the x-coordinate at θ = π? How does this value relate to the graph of y = cos(θ)?”
Teacher Guide
Get the complete package:
- Answer keys for all questions
- Differentiation strategies
- Extension activities
- Printable student handouts
