1. Trigonometry for Angle
Right Triangles Lesson 4

2. Do Now
7. Solve for x. 8. Which trig ratio could be used?

3. Trigonometry for Angle Notes
The opposite of sine is _________.
The opposite of cosine is _________.
The opposite of tangent is _________.
To solve an equation for the _________ you will need to take the ___________ of the _____ __________.
angle
inverse
trig function

4. Class Example 1
Solve for Θ.

5. Class Example 2
Solve for x.

6. Class Example 3
Set up three different trig ratios to solve for angle A.

7. Class Example 4
Solve for Θ.

8. Student Example 1
Solve for c.

9. Student Example 2
Solve for x.

10. Solve for a, round answer to the nearest hundredth.
Student Example 3
Solve for a, round answer to the nearest hundredth.

11. Student Example 4
The Parker family recently bought a new television. What is the approximate measure of angle y?