MATH 140 - Pre-calculus

Chapter 4 Videos

Section 1 Angles and Radian Measures

Section 2  The Unit Circle

Section 3 Right Triangle Trigonometry

Section 4 Trigonometry of Angles

Section 5 Graphs of Cosine and Sine and graphs of phase shifts

Section 6 Graphs of Tangent and Cotangent

Section 6 Graphs of Secant and Cosecant

Section 7 Inverse Trigonometric Sine, Cosine, Tangent
                Inverse Secant, Cosecant, Cotangent
                More examples
Examples Worksheet

Section 8 Examples Applications

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Student Requested Problems

Use the Triangle to Evaluate the Expression 4-3-17

Rewrite sec(52degrees) In Terms of Its Cofunction 4-3-21

Trig Functions With Acute Angle 4-3-51

Find the Exact Value of the Expression (trig) 4-4-89

Find Amplitude and Period of Hours of Daylight Function 4-5-85

Graphing Secant Function 4-6-43

Graph the Two Periods of the Given Tangent Function 4-6-45

Using a Graph to Solve Trig 4-6-55

Graphing Cosecant 4-6-57

Story Problem Involving Tangent 4-6-59

graphing a tangent function