Identify Hypotenuse, Adjacent and Opposite Side

Identify the trig ratio that may be used to find the marked unknown side.

Which equation would you use to solve for the unknown angle?

• x = sin^–1(4/5)

• x = cos^–1(4/5)

• x = cos^–1(5/4)

• x = tan^–1(4/5)

Which equation would you use to solve for the unknown angle?

• x = sin^–1(56/70)

• x = sin^–1(70/56)

• x = sin^–1(70/42)

• x = sin^–1(42/70)

The ratio in a right triangle of opposite to adjacent side is _____

• sine

• cosine

• tangent

• inverse cosine

How can you identify the hypotenuse of any right triangle?

• the shortest side

• the side attached to the right angle

• the side directly across from the right angle

• the side directly across from the most acute angle

What is the side marked with an X?

• hypotenuse

• opposite side

• adjacent side

• 9

• 40

• 41

• none

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

• sine

• cosine

• tangent

• cotangent

Which side is the hypotenuse?

• a

• b

• c

• a

• b

• c