Right Triangle Trigonometry Basics

Front

Right triangle

Back

Front

Hypotenuse

Back

the longest side of a right triangle. It is opposite from the right angle

Front

Sine formula

Back

A ratio of an opposite side over the hypotenuse

Front

Cosine formula

Back

A ratio of an adjacent side over the hypotenuse

Front

Tangent formula

Back

A ratio of an opposite side over the adjacent side

Front

Pythagorean Theorem

Back

Front

SOHCAHTOA

Back

Abbreviation used to remember trig ratios in a right triangle

Front

The sum of the measures of all three angles in any triangle (constant number)

Back

180 degrees

Front

Reference Angle

Back

Marked angle

Front

Adjacent side

Back

Side that is next to the reference angle