# Basic Trig Equations

Trig Equations - 1 step problems

Solving basic trig equations such as Sin(x) = 0.6
Finding all solutions between 0 and 360 degrees using the features and symmetry of the graph.
Using the unit circle to find all solutions (Positive regions: All, Sin, Tan, Cos)

#    Class Notes Ex 34.02 1 step problems p155 basic trig equations Quadrants in degrees

Solving Trig Equations by Rearranging

Rearranging equations into the form Sin(x) = before using the graph and unit circle method to solve the equation.
Solving 2 Step problems

#    Class Notes Ex 34.05 & Ex 34.06 2 step problems p156

# Sin trig equations

#### Waldo Maths java applet demonstrations Trig Equations

 Trig graphs are periodic repeating cycles) so multiple solutions are possible. Find all the solutions between x = 0 and 360°   What would the next solutions above 360° be? Mouse-over "solutions" to see the graph change   x = Sin-1(0.7) 180 - x =  # Cos trig equations

 Find the first solution by the same method. The Cos graph shape means we take the first solution off 360 for the 2nd solution.   What would the next solutions above 360° be? Mouse-over "solutions" to see the graph change   x = Cos-1(-0.3) 360 - x =  