Unit 5

Trigonometry Foundations

Define the six trig functions using the unit circle, right triangles, and reference angles. Graph sine, cosine, and tangent.

Unit 5 · 6 pages

Lessons

Unit overview, essential questions, learning objectives, and vocabulary list for Unit 5 Trigonometric Functions.

Measure angles in degrees and radians, convert between them, and find coterminal angles and arc length.

Define sine and cosine using the unit circle, find exact values at key angles, and identify periodicity.

Define tangent, cotangent, secant, and cosecant; find exact values and identify domains.

Apply SOH-CAH-TOA, solve right triangles, and use angles of elevation and depression.

Consolidate your understanding of angles, the unit circle, the six trig functions, and right triangle trigonometry.