Complementary Relationships Right Triangle Trig

When do we use Pythagoras' Theorem?

• When we are given two sides and are asked to find an angle.

• When we are given a side and an angle and are asked to find a side.

• When we are given two sides are we are asked to find the third side.

• When we are given two angles and are asked to find an angle.

If I want to find an angle of a right-angle triangle using the trig ratios, what information do I need to have?

• two sides and an angle.

• a side and an angle.

• two sides.

• two angles.

The sine ratio is equal to:

Which of the following best describes how to identify the hypotenuse of a right-angle triangle?

• It is the side opposite the other angle.

• It is the side next to the 90 degree and other angle you are using.

• It is the longest side of the triangle.

• It is the side opposite the right angle.

If I am finding the length of the side BC in the diagram, which equation should I use?

If I want to find a missing side of a right triangle using the trig ratios, what information do I need to have?

• two sides and an angle.

• a side and an angle.

• two sides.

• two angles and a side.

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

• sine

• cosine

• tangent

From ∠C, what side is AB?

• Adjacent

• Hypotenuse

• Opposite

Find x rounded to 1 decimal place.

• 26.7

• 26.8

• 16.87

• 26.9

The bottom of a ladder leaning against a wall is 1.5 m from the bottom of the wall. The ladder is 5.5 m long. Find how high the top of the ladder is above the ground, correct to one decimal place. 

• 5.2 m

• 5.3 m

• 5.7 m

• 5.8 m