Unit Circle (12/9/2020)

What is the value of cosine at 0

• 0
• 1/2
• 1
• √3 / 2

Tags

CCSS.HSF.TF.A.2

What is the value of sine at 30

• 1/2
• √3 / 2
• 0
• √2 ⁄ 2

Tags

CCSS.HSF.TF.A.2

What is the radius of the unit circle?

• 0
• 1
• 1/2
• √2/2

Tags

CCSS.HSF.TF.A.2

What is the value of cosine at 135

• 0
• 1/2
• √2 /2
• -√2 /2

Tags

CCSS.HSF.TF.A.2

What is the value of sine at 210?

• 1/2
• -1/2
• √3 / 2
• -√3 / 2

Tags

CCSS.HSF.TF.A.2

At what point are sine and cosine the same value?

• 0
• 90
• 45
• 60

Tags

CCSS.HSF.TF.A.2

sinθ is positive in

• the 1st and 2nd quadrants
• the 1st and 3rd quadrants
• the 1st and 4th quadrants
• the 2nd and 3rd quadrants

Tags

CCSS.HSF.TF.A.2

tanθ is positive in

• the 1st and 2nd quadrants

• the 1st and 3rd quadrants

• the 1st and 4th quadrants

• the 2nd and 3rd quadrants

Tags

CCSS.HSF.TF.A.2

If I wanted to find the sine of an angle, what side lengths would I need to know?

• base, hypotenuse

• hypotenuse, adjacent

• opposite, hypotenuse

• adjacent, opposite

Tags

CCSS.HSF.TF.A.2

The cosine of an angle can be calculated by which expression?

• $\frac{hypotenuse}{adjacent}$

• $\frac{opposite}{adjacent}$

• $\frac{adjacent}{hypotenuse}$

• $\frac{adjacent}{opposite}$

Tags

CCSS.HSF.TF.A.2