1. 7.7 Solve Right Triangles
Hubarth
Geometry

2. For any acute angle A of a right triangle:
Inverse Tangent
For any acute angle A of a right triangle: B z A 1 C

3. Ex 1 Use Inverse Tangent B 8 A C 10
Solution
Expression Calculator Keystrokes Display
.8 INV TAN or
2nd TAN .8 ENTER

4. Ex 2 Solve a Right Triangle
Find each measure to the nearest tenth. C 3 2 B A c
Solution

5. Inverse Sine and Inverse CosineB
For any acute angle A of a right triangle: 1 y A C x

6. Ex 3 Find the Measure of Acute Angles
a. sin A= b. cos A=0.48
Solution

7. Ex 4 Solve a Right TriangleJ 16 25
Solution G

8. Practice B b. B a. 5 A 17 C 9 C A 20
2. Solve the right triangle. Round decimals to the nearest tenth. F y a. B b. D x 3 4 6 C A 4 E