Trig ratios

Front

What is the definition of sine in a right triangle?

Back

Sine (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 definition of cosine in a right triangle?

Back

Cosine (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 definition of tangent in a right triangle?

Back

Tangent (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 equation: 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 equation: 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 equation: tan(θ) = opposite/adjacent.

Tags

CCSS.HSG.SRT.C.8

Front

What is the value of sin(90º)?

Back

The value of sin(90º) is 1.

Tags

CCSS.HSG.SRT.C.7

Front

What is the value of cos(0º)?

Back

The value of cos(0º) is 1.

Tags

CCSS.HSF.TF.A.2

Front

What is the value of tan(45º)?

Back

The value of tan(45º) is 1.

Tags

CCSS.HSG.SRT.C.7

Front

How do you determine which side is the opposite side in a right triangle?

Back

The opposite side is the side that is directly across from the angle of interest.