Pre-Cal notes

13.1 Triganometric Functions

Gabriel Hansley & Hayden Burkett

Trigonometric Functions in Right Triangles

Words- sin=(sine), csc=(cosecant), cos=(cosine), sec=(secant), tan=(tangent)

cot=(cotangent)

Symbols- sin= opp/hyp csc= hyp/opp cos= adj/hyp

sec= hyp/adj tan= opp/adj cot= adj/opp

Definitions

  1. Trigonometry- the study of relationships among the angles and sides of a right triangle.
  2. Trigonometric ratio- compares the side lengths of a right triangle.
  3. Trigonometric function- a rule given by a trigonometric ratio.

Trigonometric Values for Special Angles