1. College Algebra Trigonometry Triangles of Trigonometry By : Cherie Hamaj

2.  Triangles Triangles  45-45-90 45-45-90  30-60-90 30-60-90  Soh Cah Toa Soh Cah Toa  Pythagorean Theorem Pythagorean Theorem  http://www.mathsisfun.com/algebra/trigonometry.ht ml http://www.mathsisfun.com/algebra/trigonometry.ht ml Table of Contents

3.  There are two main triangles used in Trigonometry  45-45-90  30-60-90 Triangles

4.  To find out the lengths of the sides, each side has a variable.  The Hypotenuse is equal to “a square root of 2”  The legs are equal to “a” 45-45-90

5.  The hypotenuse is equal to “2a”  The leg across from 60 degrees equal to “a square root of 3”  The leg across from 3o degrees is equal to “a” 30-60-90

6.  To find the angles of the triangles, use soh cah toa  Soh: sin(opposite/hypotenuse)  Cah: cos(adjacent/hypotenuse)  Toa: tan(opposite/adjacent) Soh Cah Toa

7.  Another method to find the length of sides is the Pythagorean theorem.  The sides are labeled a, b, and c  The equation is a^2+b^2=c^2 Pythagorean Theorem

8. College Algebra Trigonometry Triangles of Trigonometry By : Cherie Hamaj