1. Graphs of Trigonometric Functions
Chapter 8
Graphs of Trigonometric Functions

2. Using Quadrants to measure angles

3. The SIN graph – learn its properties
y = sinx

4. The COS graph – learn its properties
y = cosx

5. The TAN graph – learn its properties
y = tanx

6. Which quadrants are positive for Sin x, Cos x and Tan x?

7. Express as trig ratios of acute angles
Sin (-100°)
Cos 330°
Tan 500°

8. Express as trig ratios of acute angles

9. Special angles: 60°, 30°, 45° Finding exact trig ratios involving these values

10. Learn these trig ratios

11. Exact values of trig ratios – using your knowledge
Ex 8D Q1 a – e. Homework
Express the following as trig ratios of either 30°, 45° or 60°,
and hence find their exact values.
Sin 135°
Sin (-60°)
Sin 330°
Sin 420°

12. Transformations of trig graphs
Remember the transformation rules from C1!!

13. Examples – have a go at these
Now do Ex 8G Q5

14. Ex 8G Q5