Trigonometry

Find the exact value of  $\sin315\degree$  

•  $\frac{1}{2}$  

•  $\frac{\sqrt{3}}{2}$  

•  $\frac{\sqrt{2}}{2}$  

•  $-\frac{\sqrt{2}}{2}$  

Find the exact value of $\cos\ -135\degree$ 

•  $\frac{1}{2}$  

•  $\frac{\sqrt{3}}{2}$  

•  $\frac{\sqrt{2}}{2}$  

•  $-\frac{\sqrt{2}}{2}$  

Given angle $\frac{2\pi}{3}$  and radius 3 m.  Find the length s to the nearest tenth.

• 6.3 m

• 3.1 m

• 2.0 m

• 12.6 m

 $\sin60\degree$  Find the exact value of

•  $\frac{1}{2}$  

•  $\frac{\sqrt{3}}{2}$  

• 1

• 0

 $\sin\left(-120\degree\right)$  Find the exact value of

•  $\frac{1}{2}$  

•  $\frac{\sqrt{3}}{2}$  

•  $-\frac{1}{2}$  

•  $-\frac{\sqrt{3}}{2}$  

Convert $125\degree$  into radians.

•  $\frac{25\pi}{72}$  

•  $\frac{25\pi}{36}$  

•  $22500\pi$  

•  $125\pi$  

Convert $\frac{3\pi}{5}$  into degrees.

•  $108\degree$  

•  $216\degree$  

•  $40\degree$  

•  $0.4\degree$  

The diameter of a circle is 6 centimeters. A central angle of a circle intercepts and arc of 12 centimeters. What is the radian measure of the angle?

• $\frac{3}{2}$

• 3

• 4

• $8\pi$

Find the radian measure of an angle of $80\degree$  

•  $\frac{4\pi}{9}$  

•  $\frac{9}{4\pi}$  

•  $\frac{4}{9\pi}$  

•  $\frac{9\pi}{4}$  

Find the degree measure of an angle of $-\frac{5\pi}{3}$  radians.

•  $-300\degree\pi$  

•  $-\frac{\pi}{108}\degree$  

•  $-300\degree$  

•  $-5.24\degree$