7.7 Solve Right Triangles Hubarth Geometry.

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Presentation transcript:

7.7 Solve Right Triangles Hubarth Geometry

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

Ex 1 Use Inverse Tangent B 8 A C 10 Solution Expression Calculator Keystrokes Display .8 INV TAN or 2nd TAN .8 ENTER 38.65980825

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

Inverse Sine and Inverse Cosine B For any acute angle A of a right triangle: 1 y A C x

Ex 3 Find the Measure of Acute Angles a. sin A=0.55 b. cos A=0.48 Solution

Ex 4 Solve a Right Triangle J 16 25 Solution G

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