8.2 - Trig - Finding Sides

Front

What is the definition of a right triangle?

Back

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

Tags

CCSS.4.G.A.2

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.

Tags

CCSS.8.G.B.7

Front

What is the sine function in a right triangle?

Back

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

Tags

CCSS.HSG.SRT.C.6

Front

What is the cosine function in a right triangle?

Back

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

Tags

CCSS.HSG.SRT.C.6

Front

What is the tangent function in a right triangle?

Back

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

Tags

CCSS.HSG.SRT.C.6

Front

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

Back

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

Tags

CCSS.HSG.SRT.C.8

Front

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

Back

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

Tags

CCSS.HSG.SRT.D.10

CCSS.HSG.SRT.D.11

Front

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

Back

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

Tags

CCSS.HSG.SRT.C.8

Front

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

Back

The angles in a right triangle determine the ratios of the lengths of the sides, which can be calculated using sine, cosine, and tangent.

Front

If sin(30°) = 0.5, what is the opposite side if the hypotenuse is 10?

Back

The opposite side = sin(30°) * hypotenuse = 0.5 * 10 = 5.

Tags

CCSS.HSG.SRT.C.8