Trigonometry Vocab

What is trigonometry?

• Who knows and who cares?
• The study of sides and angles of triangles
• Sine, Cosine and Tangent
• The best math EVER!

What is a terminal side of an angle?

• The starting point of an angle
• Where the angle goes at the airport
• The point where the angle stops after its rotation
• None of the above

What is the initial side of an angle?

• The beginning side of an angle
• The end side of an angle
• 0
• Huh?

Where does an angle in standard form begin?

• Quadrant I, x-axis
• Quadrant II, y- axis
• Quadrant III, x-axis
• Quadrant IV, y-axis

A positive angle goes in which direction...

• Counterclockwise
• Clockwise

A negative angle goes in which direction...

• Counterclockwise
• Clockwise

How many degrees are in a circle?

• 90
• 180
• 270
• 360

Tags

CCSS.4.MD.C.5

What is a radian?

• Um... What?
• Half of a degree
• A portion of a circle that has a part of the circumference equal to the radius

How do you convert from radians to degrees?

• Multiply by π ∕ 180
• Multiply by 180 / π
• Guess

How do you convert from degrees to radians?

• Multiply by π ∕ 180
• Multiply by 180 / π
• Guess