10.4 A Radian Measures MOD

Convert 40⁰ to radians

DEGREES x  $\frac{\pi}{180}$     
40 x  $\frac{\pi}{180}$  =   $\frac{40\pi}{180}$  =  (reduce the fraction)

• 2π/3

• 2π/9

• 4π/5

What is 90 degrees in radians?

DEGREES =  $\frac{\pi}{180}$  
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• π/4

• π/2

• π/6

What is 150 degrees in radians?

DEGREES =  $\frac{\pi}{180}$  

• 5π/6

• 7π/6

• 5π/4

What is 120 degrees in radians?

DEGREES = $\frac{\pi}{180}$  

• 2π/3

• π/3

• 5π/3

What is 360 degrees in radians? 
DEGREES =  $\frac{\pi}{180}$  

• 2π/3

• 5π/4

• 2π

What is 5π/6 radians in degrees?

RADIANS = $\frac{180}{\pi}$    

     $\frac{5\pi}{6}$  =  $\frac{180}{\pi}$     =   $\frac{900\pi}{6\pi}$   =  ( reduce fraction)

• 180

• 150

• 360

What is 4π/3 radians in degrees?

RADIANS =  $\frac{180}{\pi}$  

• 120

• 240

• 210

π radians is equivalent to how many degrees?

RADIANS =  $\frac{180}{\pi}$  

• 180

• 90

• 360

π/2 radians is equivalent to how many degrees?

RADIANS =  $\frac{180}{\pi}$  

• 180

• 90

• 60

π/6 radians is equivalent to how many degrees?

RADIANS =  $\frac{180}{\pi}$  

• 45

• 30

• 60