1. Tuesday 3/24

2. Warm Up Determine the six trigonometric ratios for the following triangle: y r x θ sin θ =csc θ = cos θ =sec θ = tan θ =cot θ = What if we wanted to use this triangle in the unit circle. What happens to the trigonometric ratios? sin θ =ycsc θ =1/y cos θ = xsec θ =1/x tan θ =y/xcot θ =x/y

3. Check Answers in Table

4. Si(g)n of Trig Values sin θ = cos θ = tan θ = sin θ = cos θ = tan θ = sin θ = cos θ = tan θ = sin θ = cos θ = tan θ = All Students Take Calculus!!!

5. Reference Angle θ is the acute angle formed by the terminal side of the angle and the x-axis.

6. Evaluate Trig Functions 1. Sketch the angle in standard position. 2. Find the measure of the reference angle θ. 3. Evaluate the trig function using unit circle/special right triangles. 4. Don’t forget about the sign of the trig value!