You can use inverses of trigonometric functions to solve problems.
Energy Conservation An air conditioner cools a home when the outside temperature is above
By graphing, you can find when the graph of
When does the air conditioner run?
The air conditioner runs when the temperature
You can also solve algebraically.
The air conditioner comes on about 6.5 h after midnight or 6:30 a.m. By the symmetry of the graph, it goes off about 6.5 h before midnight, or 5:30 p.m.
Use a unit circle. What are the degree measures of all angles with the given sine value?
Solve each equation for
Error Analysis A student solved the equation