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

If you know the hypotenuse and the opposite side, which trig function do you use?

Back

Sine.

Tags

CCSS.HSG.SRT.C.6

Front

If you know the adjacent side and the hypotenuse, which trig function do you use?

Back

Cosine.

Tags

CCSS.HSG.SRT.C.6

Front

If you know the opposite side and the adjacent side, which trig function do you use?

Back

Tangent.

Tags

CCSS.HSG.SRT.C.6

Front

What is the relationship between the sides of a right triangle and the sine function?

Back

sin(θ) = opposite/hypotenuse.

Tags

CCSS.HSG.SRT.C.6

Front

What is the relationship between the sides of a right triangle and the cosine function?

Back

cos(θ) = adjacent/hypotenuse.

Tags

CCSS.HSG.SRT.C.6

Front

What is the relationship between the sides of a right triangle and the tangent function?

Back

tan(θ) = opposite/adjacent.

Tags

CCSS.HSG.SRT.C.6

Front

Can trigonometric functions be used for obtuse triangles?

Back

No, trigonometric functions are defined for right triangles only.

Tags

CCSS.HSG.SRT.C.6