Warm Up 1.) Draw a 30-60-90 triangle. The length of the hypotenuse is 1. Find the length of the two legs. Leave your answers exact.

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Presentation transcript:

Warm Up 1.) Draw a triangle. The length of the hypotenuse is 1. Find the length of the two legs. Leave your answers exact.

Unit Circle Radius 1 Center is origin of the coordinate plane Θ (thay-tuh) is a Greek letter used for a missing angle measure

Ex 1: Use your brain to figure out the coordinates for the 0, 90, 180 and 270 degree angles

Ex 2: How can you find the coordinates for a 45 degree angle? A 60 degree angle?

Ex 3: Find the sine and cosine of 135 ◦

Ex 4: Find the sine and cosine of 150 ◦ and ◦

Unit Circle