9a)++Right+Triangle+trig+and+the+six+trig+ratios

Introduction to Trigonometry In this section we will show how to use trigonometric ratios to figure out the measures of angles and side lengths of right triangles when only given one angle and/or 2 side lengths. The six trigonometric functions are sine, cosine, tangent, cosecant, secant, and cotangent. Their abbreviations are sin, cos, tan, csc, sec, and cot. You will learn how to determine which sides is hypotenuse opposite and adjacent depending on the angle you’re using. Each trigonometric ratio uses specific sides to figure out specific lengths and angles. You will learn when to use which trigonometric function and how to use their inverses.

Here are some sample problems:

Here are some practice problems:

LINKS 1. [|Learning the basics] 2. [|More detailed]