PP Section 9.2

# PP Section 9.2 - The Law of Sines and The Law of Cosines...

This preview shows pages 1–7. Sign up to view the full content.

The Law of Sines and The Law of Cosines

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Objective To learn to solve triangles that are NOT right triangles. If none of the angles of a triangle is a right angle, the triangle is called oblique. To solve an oblique triangle means to find the lengths of its sides and the measurements of its angles.
All angles are acute Two acute angles, one obtuse angle There are two types of oblique triangles.

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
CASES FOR SOLVING AN OBLIQUE TRIANGLE CASE 1: One side and two angles are known (SAA or ASA). CASE 2: Two sides and the angle opposite one of them are known (SSA). CASE 3: Two sides and the included angle are known (SAS). CASE 4: Three sides are known (SSS).
The Law of Sines is used to solve SAA, ASA or SSA triangles, which are cases 1 and 2. Law of Sines For a triangle with sides and opposite angles , , , respectively, a b c , , αβγ sin sin sin α β γ a b c = =

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
=30 (SAA) α β o o , , = = 70 5 a 70 o 30 o 5 b c γ + + = 180 o 30 70 180 o o o + + = = o o c
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

### Page1 / 19

PP Section 9.2 - The Law of Sines and The Law of Cosines...

This preview shows document pages 1 - 7. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online