Sine and Cosine Values in a Unit Circle

What Quadrant has

-a positive sine value

-a negative cosine value

• Q1

• Q2

• Q3

• Q4

What Quadrant has -a negative sine value -a negative cosine value

• Q1

• Q2

• Q3

• Q4

• 0

• 1

• -1

• 1

• 0

• -1

The sine of any angle on the unit circle is the y-coordinate.

• True

• False

sin(7π/4)

• 1/2

• -√2/2

• √2/2

• -1/2

What is the value of sine at 210?

• 1/2

• -1/2

• √3 / 2

• -√3 / 2

What is the value of sine at 150

• 0

• 1/2

• 1

• √3 / 2

cos 270^o

• 0

• 1

• -1

• und

sin 7π/6

• 1/2

• -1/2

• √3/2

• -√3/2