Exploring the Unit Circle with Sine and Cosine

What can you find on the Schoology webpage related to the unit circle?

• Quiz answers

• Class notes/resources

• Student discussions

• Teacher's contact information

How many degrees are between the smaller sections of the unit circle?

• 15 degrees

• 30 degrees

• 45 degrees

• 60 degrees

What is the distance of the radius in the unit circle?

• Square root of 3 over 2

• 2

• 1

• Square root of 2

In which quadrant of the unit circle are all points positive?

• I

• II

• III

• IV

What is the y-value of the point at 30 degrees on the unit circle?

• -0.5

• Square root of 3 over 2

• -Square root of 3 over 2

• 0.5

What does the calculator refer to when computing sine of 30 degrees?

• The radius of the circle

• The diameter of the circle

• The y-value of the point

• The x-value of the point

What is the cosine of 30 degrees equivalent to?

• -Square root of 3 over 2

• Square root of 3 over 2

• -0.5

• 0.5

How is the sine function defined in relation to a right triangle?

• Hypotenuse over opposite

• Opposite over hypotenuse

• Opposite over adjacent

• Adjacent over hypotenuse

What is the x-value of the point at 5 pi over 6 radians on the unit circle?

• -Square root of 3 over 2

• -0.5

• Square root of 3 over 2

• 0.5

What is the sine of 315 degrees?

• -Square root of 2 over 2

• -0.5

• Square root of 2 over 2

• 0.5