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TrigonometryUnit 1
Purple Day
1.1 Degree and Radian Measures
1.2 Right Triangle Trig
1.2B Application problems
1.3 Unit Circle
Unit Circle JKI, problems 1.3B
1.4 Trigonometric Function of Any Angle
Unit 1 Test Review
Unit 1 Test
Use these slides as reference for 1.1
Remember the quadrants of the graph:
Angles and standard position
Terminal Side
Vertex
initial side
The starting position is the initial side of the angle, and the position after rotation is the terminal side.
Positive angles are generated by counterclockwise rotation.
Negative angles are generated by clockwise rotation.
Angles that have the same initial sides and terminal sides are called coterminal.
Negative angles are generated by clockwise rotation.
Angles that have the same initial sides and terminal sides are called coterminal.
Radian Measure
Definition of Radian
One radian is the measure of a central angle 𝜃 that intercepts an arc s equal in length to the radius of the circle.
One radian is the measure of a central angle 𝜃 that intercepts an arc s equal in length to the radius of the circle.
