Appendix

 

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Enhance Your Understanding

 

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Glossary

 

Unit 3: Trigonometry

Angle of Depression The angle between the horizontal and an observer's line of sight to an object below the horizontal

Angle of Elevation The angle between the horizontal and an observer's line of sight to an object above the horizontal

Cosine Ratio The ratio of the side length adjacent to an angle to the length of the hypotenuse in a right triangle

Hypotenuse The longest side of a right triangle and the side opposite the right angle in a right triangle

Primary Trigonometric Ratios The sine, cosine, and tangent ratios

Similar Triangles Triangles that have the same shape, with the same three angle measures

Sine Ratio The ratio of the side length opposite an angle to the length of the hypotenuse in a right triangle

Solving a Right Triangle Determining all unknown side lengths and angle measures in a right triangle

Tangent Ratio The ratio of the side length opposite an angle to the side length adjacent to that angle in a right triangle

Trigonometry The study of the relationship between side lengths and angles of a triangle

 

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