GRADE-9

It is the longest side and is always opposite the right angle.

• hypotenuse

• opposite

• adjacent

• right angle

Given the illustration: triangle ABC, which side is the hypotenuse?

• side a

• side b

• side c

In relation to ∠B, which side is the opposite?

• side a

• side b

• side c

In relation to ∠A, which side is the adjacent?

• side a

• side b

• side c

Given the right triangle; if ∠A is 40° , what is the measure of ∠B?

• 40°

• 50°

• 60°

• 90°

The equation used for Sin ;

• opposite/tangent

• hypotenuse/opposite

• opposite/hypotenuse

• adjacent/tangent

θ ; what do you call this symbol for the unknown measure of angle?

• Tita

• theta

• taita

• tetha

In relation to ∠A, if b = 10 and a = 5, find tan A.

• 2

• 0.5

• 0.2

• 1.5

This mnemonic can be used to aid in remembering which function to use in the equation of the trigonometric functions.

• SOH COA TOA

• SOH COA TOA

• SOA CAH TOA

• SOH CAH TOA