Trig Ratios and Special Right Triangles

Front

The Pythagorean Theorem is _________

Back

Front

If you are given the opposite side and hypotenuse, which trig function should you use?

Back

Sine (sin) is used when you have the opposite side and the hypotenuse.

Front

What is the length of x in this 45-45-90 triangle?

Back

Front

If you are given the two sides that are not the hypotenuse, which trig function should you use?

Back

Tangent (tan) is used when you have the lengths of the two legs (opposite and adjacent).

Front

What is the measure of side c in a 45-45-90 triangle with legs of length 7?

Back

Front

Define sine in terms of a right triangle.

Back

Front

Define cosine in terms of a right triangle.

Back

Front

Define tangent in terms of a right triangle.

Back

Front

What are the side lengths of a 30-60-90 triangle?

Back

Front

What is the hypotenuse of a 30-60-90 triangle if the shorter leg is 5?

Back

The hypotenuse is 10, since it is twice the length of the shorter leg.