01+Right+triangle+trigonometry

Right Triangle Trigonometry

1. Summary (CURTIS): The angle of reference of a right triangle can be plugged into three “formulas”. Sin of A is the opposite leg over the hypotenuse. The cos of A is the adjacent leg over the hypotenuse. The tan of A is the opposite leg over the adjacent leg. These formulas are only definite for right triangles due to the definite angles of 30, 60, 90. When one of these angles is given, it’s usually easy to figure out the rest and fill in to these formulas and find the rest of the angles and side measurements.

=2. __**Rules, Properties, and Formulas! (maggie)**__= Rules of Right Triangle Trig:
 * 1) This only works for a right triangle! These formulas only apply to triangles with a right angle.
 * 2) The hypotenuse, the longest side, is always opposite from the right angle (largest side is opposite largest angle)

Properties of Right Triangle Trig:
 * 1) While a right triangle can be isosceles, a right triangle can NEVER be equilateral.

Formulas for Right Triangle Trig: 3. Examples: (zach)





=4. __**Helpful Websites! (maggie)**__=

__**Regents Prep: Right Triangle Trig**__ __**RMIT University: Right Triangle Trig (PDF)**__
 * __ Clark University: Right Triangles __**