Trig and Special Right Triangles

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 are the two special right triangles?

Back

The two special right triangles are the 45-45-90 triangle and the 30-60-90 triangle.

Tags

CCSS.8.G.B.8

Front

What is the ratio of the sides in a 45-45-90 triangle?

Back

In a 45-45-90 triangle, the sides are in the ratio 1:1:√2.

Tags

CCSS.8.G.B.8

Front

What is the ratio of the sides in a 30-60-90 triangle?

Back

In a 30-60-90 triangle, the sides are in the ratio 1:√3:2.

Tags

CCSS.HSG.CO.C.10

Front

What is the sine function?

Back

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

Tags

CCSS.HSG.SRT.C.6

Front

What is the cosine function?

Back

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

Tags

CCSS.HSG.SRT.C.6

Front

What is the tangent function?

Back

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

Tags

CCSS.HSG.SRT.C.6

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: opposite = hypotenuse * sin(angle).

Tags

CCSS.HSG.SRT.D.10

CCSS.HSG.SRT.D.11

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: adjacent = hypotenuse * cos(angle).

Tags

CCSS.HSG.SRT.D.10

CCSS.HSG.SRT.D.11

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: opposite = adjacent * tan(angle).

Tags

CCSS.HSG.SRT.C.8