Warm Up

Angles of Depression/Elevation

Law of Sines & Area of a

A December 10th, 2013

B December 11th, 2013

Angles of Elevation/Depression

Example

Example

Area of a Triangle w/ Height

How to Label the Sides/Angles

The Area of a Triangle Formula

The Area of a Triangle Formula

Example

Example

Example

Law of Sines / The Sine Rule

So when do I use law of sines and when do I use trig ratios? Use basic trig ratios and equations for

RIGHT TRIANGLES ONLY! Law of Sines can be used when not a right

triangle and given:

Law of Sines / The Sine Rule

Example-Finding Sides

Example-Finding Angles

Examples:

Example

Homework

A Day Edition 2 Pg. 404 #1-3, 5-6, 9 Pg. 413 #1 and #4 Pg. 417 #1 Pg. 418 #1-2

B Day Edition 1 Pg.329-330 #1-3, 5-6, 12 Pg. 338-339 #1 and #4 Pg. 341 #1 Pg. 343 #1-2