Understanding trigonometric functions

halle la tangente de $\alpha$  

•  $\frac{3}{4}$  

•  $\frac{4}{3}$  

•  $\frac{3}{5}$  

•  $\frac{4}{5}$  

True or false:
 $\sin\left(k\cdot\pi\right)$  is always 0  (k is a whole number)

• True

• False

(3, -3) is a point on the terminal side of an angle. Find the exact value of  $\sin\theta$  .

•  $-\frac{\sqrt{2}}{2}$  

•  $\frac{\sqrt{2}}{2}$  

• -1

•  $-\sqrt{2}$  

Based on your unit circle cos(30^o)=

• 1
• 1/2
• √3/2
• √2/2

How many RADIANS are in a circle?

• 180^o

• 360^o

• π rad

• 2π rad

find cos

• y / x

• z / x

• x / z

• x / y

Choose the correct ratio.

• sin(37)=x/14
• cos(37)=x/14
• tan(37)=x/14
• sin(37)=14/x

Mathematical Equivalence

ON