PRECALCULUS  
UNIT 4: TRIGONOMETRIC FUNCTIONS
3-1ANGLE MEASURE IN DEGREES AND RADIANS
Angles
Angles can be defined as the seperation or inclination between a terminal side and in initial side which share thesame point of intersection. 
How To Convert Between Degrees and Radians
4-2 HOW TO USE THE UNIT CIRCLE
4-3 RIGHT TRIANGLE TRIGONOMETRY
Right Triangle Trig Ratios: The six right triangle trigonometry ratios are equations that show the relationship between the an angle and the ratio of any two sides of the right triangle. The six trig ratios are sine, cosine, tangent, cosecant, secant and cotangent. The reciprocal of sine is cosecant, the reciprocal of cosine is secant and the reciprocal of tangent is cotangent. 
4-4 TRIG FUNCTIONS OF ANY ANGLE IN STANDARD POSITION
4-5 GRAPHING AND ANALYZING PARENT TRIG FUNCTIONS
4-5B TRANSFORMED PARENT TRIG FUNCTIONS