8.2 - Trig - Finding Sides

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

What is the Pythagorean theorem?

Back

In a right triangle, a² + b² = c², where c is the hypotenuse.

Tags

CCSS.8.G.B.8

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 formula for finding the opposite side using sine?

Back

Opposite = Hypotenuse × sin(θ).

Tags

CCSS.HSG.SRT.C.8

Front

What is the formula for finding the adjacent side using cosine?

Back

Adjacent = Hypotenuse × cos(θ).

Tags

CCSS.HSG.SRT.C.8

Front

What is the formula for finding the opposite side using tangent?

Back

Opposite = Adjacent × tan(θ).

Tags

CCSS.HSG.SRT.C.8