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Home  /  Precalculus: Graphical, Numerical, Algebraic (10e, HS/AP edition)  /  Chapter 4 · Trigonometric Functions
Section 4.2

Trigonometric Functions of Acute Angles

Right-triangle trig: sine, cosine, tangent and reciprocals; complementary angles; cofunction identities.

5 lessons. Pick what you need.

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Chapter 4 · Trigonometric Functions
4.1 4.2 4.3 4.4 4.5 4.7 4.8
Lesson

Lesson on Angle Relationships

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Lesson

Lesson Reviewing Similar Triangles for Trigonometry

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Examples

Examples on Similar Triangle Problems

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Lesson

Lesson Understanding Trig Functions with Right Triangles and Cofunctions

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Lesson

Lesson on Trig Function Values as Angles Change and Special Angles

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