Basic Trig Ratios

Front

What is the definition of a right triangle?

Back

A triangle with one angle measuring 90 degrees.

Front

What are the three sides of a right triangle called?

Back

Opposite, Adjacent, and Hypotenuse.

Front

What is the Hypotenuse in a right triangle?

Back

The longest side opposite the right angle.

Front

What is the formula for finding the Tangent of an angle?

Back

Tangent (tan) = Opposite / Adjacent.

Front

What is the formula for finding the Sine of an angle?

Back

Sine (sin) = Opposite / Hypotenuse.

Front

What is the formula for finding the Cosine of an angle?

Back

Cosine (cos) = Adjacent / Hypotenuse.

Front

If angle A is 30 degrees, what is sin(A)?

Back

sin(30°) = 1/2.

Front

If angle A is 30 degrees, what is cos(A)?

Back

cos(30°) = √3/2.

Front

If angle A is 30 degrees, what is tan(A)?

Back

tan(30°) = 1/√3.

Front

What is the relationship between the sides in a 3-4-5 triangle?

Back

It is a right triangle where 3 and 4 are the legs and 5 is the hypotenuse.