Unit 7 Right Triangle Trig Review (Geometry)

Front

What is a right triangle?

Back

A right triangle is a triangle that has one angle measuring 90 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 (c) is equal to the sum of the squares of the lengths of the other two sides (a and b): a² + b² = c².

Front

What is the hypotenuse in a right triangle?

Back

The hypotenuse is the longest side of a right triangle, opposite the right angle.

Front

What are the two other sides of a right triangle called?

Back

The two other sides are called the adjacent side and the opposite side.

Front

What is the sine function?

Back

The sine function (sin) is a trigonometric function defined as the ratio of the length of the opposite side to the length of the hypotenuse in a right triangle.

Front

What is the cosine function?

Back

The cosine function (cos) is a trigonometric function defined as the ratio of the length of the adjacent side to the length of the hypotenuse in a right triangle.

Front

What is the tangent function?

Back

The tangent function (tan) is a trigonometric function defined as the ratio of the length of the opposite side to the length of the adjacent side in a right triangle.

Front

What is the formula for finding the length of the hypotenuse?

Back

The formula is a² + b² = c², where c is the length of the hypotenuse.

Front

What does 'adjacent' mean in a right triangle?

Back

The adjacent side is the side next to the angle of interest, excluding the hypotenuse.

Front

What does 'opposite' mean in a right triangle?

Back

The opposite side is the side opposite the angle of interest.