Unit 5 Intro to Trigonometry

Front

What is the ratio for Sine?

Back

Opp/Hyp

Front

What is the ratio for Cosine?

Back

Adj/Hyp

Front

What is the ratio for Tangent?

Back

Opp/Adj

Front

What is the hypotenuse in a right triangle?

Back

The longest side opposite the right angle.

Front

What is the definition of an adjacent side in a right triangle?

Back

The side next to the angle of interest.

Front

If one angle in a right triangle is 30 degrees, what is the sine of that angle?

Back

1/2

Front

If one angle in a right triangle is 45 degrees, what is the cosine of that angle?

Back

√2/2

Front

What is the Pythagorean theorem?

Back

a² + b² = c², where c is the hypotenuse.

Front

How do you find the length of a side in a right triangle using sine?

Back

Length = Hypotenuse * sin(angle).

Front

How do you find the length of a side in a right triangle using cosine?

Back

Length = Hypotenuse * cos(angle).