Trig Sides

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 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 sine function?

Back

The sine function (sin) is a trigonometric function that relates the angle of a right triangle to the ratio of the length of the opposite side to the length of the hypotenuse.

Front

What is the cosine function?

Back

The cosine function (cos) is a trigonometric function that relates the angle of a right triangle to the ratio of the length of the adjacent side to the length of the hypotenuse.

Front

What is the tangent function?

Back

The tangent function (tan) is a trigonometric function that relates the angle of a right triangle to the ratio of the length of the opposite side to the length of the adjacent side.

Front

How do you find the length of a side using the sine function?

Back

To find the length of a side using the sine function, use the formula: sin(angle) = opposite/hypotenuse.

Front

How do you find the length of a side using the cosine function?

Back

To find the length of a side using the cosine function, use the formula: cos(angle) = adjacent/hypotenuse.

Front

How do you find the length of a side using the tangent function?

Back

To find the length of a side using the tangent function, use the formula: tan(angle) = opposite/adjacent.

Front

What is the relationship between the angles and sides in a right triangle?

Back

In a right triangle, the larger the angle, the longer the opposite side, and the shorter the adjacent side.

Front

What is the hypotenuse in a right triangle?

Back

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