Trigonometry Basics

Front

What is the definition of cosine in a right triangle?

Back

Cosine 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 value of cos(0°)?

Back

1

Tags

CCSS.HSF.TF.A.2

Front

What is the value of cos(90°)?

Back

0

Tags

CCSS.HSF.TF.A.2

Front

What is the sine function defined as in a right triangle?

Back

Sine 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 value of sin(30°)?

Back

1/2

Tags

CCSS.HSG.SRT.C.7

Front

What is the value of sin(60°)?

Back

√3/2

Tags

CCSS.HSF.TF.A.2

Front

What is the tangent function defined as in a right triangle?

Back

Tangent is the ratio of the length of the opposite side to the length of the adjacent side.

Tags

CCSS.HSG.SRT.C.6

Front

What is the value of tan(45°)?

Back

1

Tags

CCSS.HSG.SRT.C.7

Front

What is the Pythagorean identity involving sine and cosine?

Back

sin²(θ) + cos²(θ) = 1.

Tags

CCSS.HSF.TF.C.8

Front

What is the value of tan(0°)?

Back

0

Tags

CCSS.HSF.TF.A.2