Terms and Concepts
Basic Trig Functions
Similar Triangles
Radians and Degrees
Word Problems
1

What type of angles add up to 180 degrees?

(a) Supplementary Angles

(b) Complementary Angles

(a) Supplementary Angles

1

What is the memory tool used to remember the three basic trigonometric functions?

SOH CAH TOA

1

In order for two triangles to be similar, what must be true about their angle measurements?

They must be the same

1

Which of the following is the correct ratio to use when converting from degrees to radians?

(a) 𝝅 / 180 Degrees

(b) 𝝅 / 90 Degrees

(c) 180 Degrees / 𝝅 

(a) 𝝅 / 180 Degrees

1

Which angle of a right triangle matches with the description "perpendicular to?"

Right angle

2

The longest side of a right triangle is known as what?

Hypotenuse

2

Write out the formula for sin θ.

Sin θ = Opposite / Hypotenuse

2

In order for two triangles to be similar, what must be true about their side lengths?

They must be equally proportionate.

2

Convert 60 degrees to radians.

𝝅 / 3

2

Which leg (vertical or horizontal) of a right triangle matches with the description "height."

Vertical leg

3

What should you use to solve for an unknown side of a right triangle?

Pythagorean Theorem

3

Write out the formula for cos θ.

Cos θ = Adjacent / Hypotenuse

3

Convert 𝝅 to degrees.

180 degrees

3

Which angle (rising upwards or falling downwards) of a right triangle matches with the description "angle of depression?"

Angle falling downwards

4

What should you use to solve for an unknown angle of a right triangle?

Inverse Trig Functions

4

Write out the formula for tan θ.

Tan θ = Opposite / Adjacent

4

Find the missing side of the triangle assuming that the triangles are similar.

https://study.com/cimages/multimages/16/0012942813609641267588.png

EY = 7 inches

4

Convert 135 degrees to radians.

3𝝅 / 4

4

An 8 foot long sheet of plywood is leaning against the wall so that the base is 2 feet from the wall. Find how high up on the wall the sheet is leaning. Round your answer to the nearest tenth.

Height = 7.7 (2√15) Feet

5

Adjacent angles share which two things?

(a) Common Side

(b) Common Degree Measurement

(c) Common Length

(d) Common Vertex

(a) Common Side

(d) Common Vertex

5

Find the remaining trig function values using the following trig function: sin θ = √3 / 2.

Cos θ = 1/2

Tan θ = √3

5

Find the missing side of the triangle assuming that the triangles are similar.

https://study.com/cimages/multimages/16/similar_18913120108384390380.jpg

SR = 30

5

Convert 5𝝅 /3 to degrees.

300 degrees

5

Galileo wanted to release a wooden ball and an iron ball from a height of 100 meters and measure the duration of their fall. He found a plane with an incline of 12 degrees that he could climb until he could get to an altitude of 100 meters. How far should Galileo walk up the inclined plane? Round your final answer to the nearest hundredth.

 meters

Hypotenuse = 480.97 meters