Exploring Angles and the Unit Circle

Which quadrant contains all positive x and y values?

• Quadrant II

• Quadrant I

• Quadrant IV

• Quadrant III

In which direction do quadrants progress from the first quadrant?

• Vertically

• Horizontally

• Clockwise

• Counterclockwise

What is the range of degrees for an angle in the second quadrant?

• 0 to 90 degrees

• 270 to 360 degrees

• 90 to 180 degrees

• 180 to 270 degrees

What is a quadrantal angle?

• An angle that is exactly 360 degrees

• An angle whose terminal side lies on one of the axes

• An angle that is more than 180 degrees

• An angle that is less than 90 degrees

Which quadrant does an angle of 225 degrees fall into?

• Quadrant IV

• Quadrant I

• Quadrant II

• Quadrant III

What does the x-coordinate in the unit circle represent?

• Tangent of the angle

• Cotangent of the angle

• Sine of the angle

• Cosine of the angle

What is the sine of 90 degrees?

• Undefined

• -1

• 1

• 0

What is the cosine of 180 degrees?

• 0

• 1

• -1

• Undefined

What is the tangent of 270 degrees?

• 1

• -1

• Undefined

• 0

What is the value of sine for an angle of 360 degrees?

• 0

• -1

• Undefined

• 1