Trig Ratios

Front

What are the three primary trigonometric ratios?

Back

Sine (sin), Cosine (cos), Tangent (tan).

Tags

CCSS.HSG.SRT.C.6

Front

What is the mnemonic to remember the trigonometric ratios?

Back

Soh Cah Toa.

Tags

CCSS.HSG.SRT.C.8

Front

What is the sine ratio in a right triangle?

Back

sin(θ) = opposite side / hypotenuse.

Tags

CCSS.HSG.SRT.C.6

Front

What is the cosine ratio in a right triangle?

Back

cos(θ) = adjacent side / hypotenuse.

Tags

CCSS.HSG.SRT.C.6

Front

What is the tangent ratio in a right triangle?

Back

tan(θ) = opposite side / adjacent side.

Tags

CCSS.HSG.SRT.C.6

Front

In a right triangle, if the opposite side is 3 and the hypotenuse is 5, what is sin(θ)?

Back

sin(θ) = 3/5.

Tags

CCSS.HSG.SRT.C.6

Front

In a right triangle, if the adjacent side is 4 and the hypotenuse is 5, what is cos(θ)?

Back

cos(θ) = 4/5.

Tags

CCSS.HSG.SRT.C.6

Front

In a right triangle, if the opposite side is 3 and the adjacent side is 4, what is tan(θ)?

Back

tan(θ) = 3/4.

Tags

CCSS.HSG.SRT.C.6

Front

What is the relationship between sine and cosine for complementary angles?

Back

sin(θ) = cos(90° - θ).

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