1. 7-1: Special Right Triangles and Trigonometric Ratios
Unit 7
English Casbarro

2. Turn in the following problems.
In the parking lot shown, the lines that mark
the width of the spaces are parallel. Find x and y.
2. A piece of property lies between 2 parallel streets as shown in the picture.
What is the relationship between
the angles? What are their measures?

3. Recall: The Pythagorean Theorem
Recall: The Pythagorean Theorem. This allows you to find legs and the hypotenuse
of a right triangle. There are 2 types of triangles that allow you to use shortcuts
to find out the lengths of their sides.
These are the 45°-45°-90° and 30°-60°-90°

6. Problem 3- Solve the triangles for the unknown sides.

11. Trigonometric Ratios
Most of the time the angles are not the special triangles we have seen. There are other ways to find the lengths of the sides of the triangles.

12. Trig Ratios are always listed sin cos tan in that order!
You can also
remember the
word:
SOH-CAH-TOA

13. This is the basic problem that just tests your knowledge of writing the ratios.
You must know which is the opposite side, which is the adjacent side (these
Switch depending on the angle that you are talking about), and the hypotenuse.

15. Check your knowledge