Calculating Trigonometric Ratios
Grade 11th Grade · Math · 45 min
What's Included
Learning Objective
I can calculate the values of trigonometric ratios for angles in standard position.
Warm-Up Video
Professor Dave Explains · 9:48
The Easiest Way to Memorize the Trigonometric Unit Circle
Guided Notes
3 key concepts
- 1
The unit circle is a circle with a radius of one superimposed on the coordinate plane, centered at the origin.
- 2
Every point on the unit circle has an x-coordinate equal to cosine θ and a y-coordinate equal to sine θ.
- 3
The numerical sequence to remember for sine and cosine values in the first quadrant is √0/2, √1/2, √2/2, √3/2, √4/2.
Practice Questions
8 questions · Multiple choice & Short answer
Exit Ticket
Quick comprehension check
“What are the sine and cosine values for the angle 5π/6 on the unit circle?”
Teacher Guide
Get the complete package:
- Answer keys for all questions
- Differentiation strategies
- Extension activities
- Printable student handouts
