Inverses in trig functions

This past week in Adv Math H we learned about inverses in trig functions.

-This lesson correlates with the unit circle and the 6 trig functions.

-Every inverse has to have a minimum of two answers.

-You must check the mode on your calculator to see if it is correct before entering a radian or a degree.

To move to different quadrants:

To get from quadrant one to quadrant two-make it negative and add 180 degrees.

To get from quadrant one to quadrant three -simply add 180 degrees.

To get from quadrant one to quadrant four- make it negative and add 360 degrees.

Example:

Tan^-1 ( 25 ) = 87.709

-Tan is positive in the first and third quadrant, you would simply add 180 degrees.

-Your answer would then be 267.709. ← (take and turn into degrees, minutes, and seconds.

.709*60=42.54

.54*60=32.4

Your valid answer is 267 degrees, 42 minutes, 32 seconds.