Download Untitled.notebook 1 October 11, 2016

Untitled.notebook
October 11, 2016
Recall we have slightly different definitions for the ratios if the
sides are part of a right triangle Sin x=
cos x tanx =
Note: these definitions are consistent with our previous ones, as
long as you choose the reference triangle correctly Practice using angle terminology The angle of elevation of the sun is 75 degrees The angle of depression to the bottom of a canyon The angle between a tent rope and the ground 1
Untitled.notebook
October 11, 2016
Example 1 : solve the right triangle below x
12
32o
y
2
Untitled.notebook
October 11, 2016
3
Untitled.notebook
October 11, 2016
Example 3: a person standing 150 cm from a mirror notices that the angle of depression from his eyes to the bottom of the mirror is 12 degrees. The angle of elevation from his eyes to the top of the mirror is 11 degrees. Find the vertical dimension of the mirror. Show all 4 steps Clearly. 4