Chapter 9.5: Trigonometric Ratios

Question 1

Trigonometric Ratio

Answer 1

a ratio of the lengths of two sides of a right triangle.

Question 2

Trigonometric Ratios

Answer 2

sine, cosine, and tangent, which are abbreviated as sin, cos, and tan, respectively.
Sin A = Side opp. angle A/Hypotenuse = a/c
Cos A = Side adj. to angle A/Hypotenuse = b/c
Tan A = Side opp. angle A/Side adj. to angle A = a/b