Show:
Trigonometric Functions & the Unit Circle
Vocabulary
Understanding the
Unit Circle
Positive & Negative
100
1
What is tan of 45˚?
100
Angle
What is the space between two connected lines?
100
2π
What is the period of the Unit Circle?
100
1 & 3
Which two quadrants are tan positive in?
200
Radians
What is the measure of a central angle subtending an arc equal in length to the radius?
200
360˚
How many degrees is the Unit Circle consisted of?
200
1
Which quadrant are all of the Trigonometric function positive in?
300
Degrees
What is the unit for measuring an angle or an arc of a circle?
300
180˚
What is π represented in degrees?
300
3 & 4
Which quadrants are sin negative in?
400
Fraction
What is a number usually expressed in the form a/b?
400
4
Which quadrant is sec positive in, besides the 1st quadrant?
500
Unit circle
What is a circle whose radius has a length of one unit?
500
tan & cot
Which two trigonometric functions are positive in the 3rd quadrant?