Untitled.notebook
September 11, 2013
Using Trig functions to find missing side lengths.
• All trig application problems usually fall into one of three categories:
Untitled.notebook
September 11, 2013
Using Trig functions to find missing side lengths.
• Find the missing side or angle:
a)
b)
Angle of Elevation & Angle of Depression
• If you are an ant looking up, your line of sight forms an angle of elevation with the ground
• If you are a bird looking down, your line of sight forms an angle of depression with the horizon.
Untitled.notebook
September 11, 2013
A sightseer on vacation looks down into a 1348 foot deep canyon using binoculars. She spots and elephant on the other side of the river at a 42o angle of depression. How wide is the river?