Trigs Angles and Sides

Front

What is the sum of the angles in a triangle?

Back

The sum of the angles in a triangle is always 180 degrees.

Front

What is the definition of a right triangle?

Back

A right triangle is a triangle that has one angle measuring 90 degrees.

Front

What is the sine function in relation to a right triangle?

Back

The sine function is the ratio of the length of the opposite side to the length of the hypotenuse.

Front

What is the cosine function in relation to a right triangle?

Back

The cosine function is the ratio of the length of the adjacent side to the length of the hypotenuse.

Front

What is the tangent function in relation to a right triangle?

Back

The tangent function is the ratio of the length of the opposite side to the length of the adjacent side.

Front

How do you find the missing angle in a right triangle if you know the other two angles?

Back

Subtract the sum of the known angles from 180 degrees.

Front

What is the Pythagorean theorem?

Back

The Pythagorean theorem states that in a right triangle, the square of the length of the hypotenuse is equal to the sum of the squares of the lengths of the other two sides (a² + b² = c²).

Front

What is the opposite side in a right triangle?

Back

The opposite side is the side opposite to the angle being referenced.

Front

What is the adjacent side in a right triangle?

Back

The adjacent side is the side next to the angle being referenced, but not the hypotenuse.

Front

How do you determine which trigonometric function to use?

Back

Identify the sides you know (opposite, adjacent, hypotenuse) and the angle you are working with.