Identifying Trig Values From Points on a Circle

Find the sin $\theta$   for the point ( $\frac{3}{7},\ \frac{\sqrt{40}}{7}$  ) on the unit circle

• 3/7

• 7/3

•  $\frac{\sqrt{40}}{7}$  

• 7 $\frac{\sqrt{40}}{7}$  

Tags

CCSS.HSF.TF.A.2

find  $\cos\theta$  for the point (3/7 ,  $\frac{\sqrt{40}}{7}$  ) on the unit circle

• 3/7

• 7/3

•  $\frac{\sqrt{40}}{7}$  

•  $\frac{7\sqrt{40}}{40}$  

Tags

CCSS.HSF.TF.A.2

Using (-3, 1) as the terminal side, what is  $\cos\left(\theta\right)$  ?

•  $-3$  

•  $-\frac{3\sqrt{10}}{10}$  

•  $1$  

•  $\frac{\sqrt{10}}{10}$  

Tags

CCSS.HSG.SRT.C.6

Choose all the trigonometric ratios below that have a solutions of $-\frac{1}{2}$  .

•  $\sin\left(330^o\right)$  

•  $\cos\left(120^o\right)$  

•  $\sin\left(-30^o\right)$  

•  $\cos\left(240^o\right)$  

•  $\sin\left(-240^o\right)$  

Tags

CCSS.HSG.SRT.C.7

Use the point $\left(\sqrt{7},-\sqrt{2}\right)\$ as the terminal side of an angle to find  $\sin\left(\theta\right)$  .

•  $-\frac{\sqrt{2}}{9}$  

•  $-\frac{\sqrt{2}}{3}$  

•  $\frac{\sqrt{7}}{9}$  

•  $\frac{\sqrt{7}}{3}$  

Tags

CCSS.HSG.SRT.C.8

If angle A in standard position has its terminal side passing through the point (-3, 4), find sin A.

• -3/5
• -4/5
• 3/5
• 4/5

Tags

CCSS.HSF.TF.A.2

If θ is in quadrant IV and cosθ = 5/13, what is sin θ?

• 12/13
• -12/13
• 5/12
• -5/12

Tags

CCSS.HSG.SRT.C.7