Calculating Trigonometric Ratios
11th Grade · Math · 45 min
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Learning Objective
I can calculate the values of trigonometric ratios for angles in standard position.
- 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.
