Double Angle Practice

Double Angle Practice

Open Ended

What steps do we need to take to solve our double angle formulas?

Independent Practice

 $\tan\theta=-\sqrt{3}$ , located in Quadrant 2

Multiple Choice

The length of the hypotenuse is

• 2

• 4

• 7

• 5

Multiple Choice

 $\cos\theta\$  is 

•  $-\frac{1}{2}$  

•  $\frac{1}{2}$  

•  $\frac{\sqrt{3}}{2}$  

Multiple Choice

 $\sin\theta$  is 

•  $\sqrt{3}$  

•  $\frac{\sqrt{3}}{2}$  

•  $\frac{1}{2}$  

Multiple Choice

 $\sin\left(2\theta\right)$  is  $-\frac{\sqrt{3}}{2}$  

• True 

• False

Open Ended

 $\cos\left(2\theta\right)$  is 

Multiple Choice

 $\tan\left(2\theta\right)$  is 

•  $\sqrt{3}$  

•  $-\sqrt{3}$  

•  $\frac{\sqrt{3}}{2}$  

•  $\frac{1}{2}$  

Multiple Choice

If  $\cos A=\frac{1}{3}$ , where  $\angle A$  is in Q1, find   $\cos\left(2A\right).$  

•  $\frac{-7}{9}$ 

• $\frac{7}{9}$

• 1

• -1

Poll

Gauge your understanding

• Confident

• Need more practice

• Confused