CK12 - Trigonometry

at the closestwheelto the track.Whatis the differencein numberof rotationsthat the outerwheelmustturn
comparedwith the innerwheel?

8. Statethe measureof an anglethat is co-terminalwith 90
   o


9. Nametwo anglesthat are co-terminalwith 120o

a. An anglethat is negative

b. An anglethat is greaterthan 360

10. A drag racergoesarounda 180 degreecircularcurvein a racetrackin a path of radius120 m. Its front
    and backwheelshavedifferentdiameters.The front wheelsare .6 m in diameter. The rear wheelsare much
    larger;they havea diameterof 1.8 m. The axlesof both wheelsare 2 m long.Whichwheelhas morerotations
    goingaroundthe curve.How manymoredegreesdoesthat wheelrotatecomparedwith the wheelthat rotates
    the leastmakingthat curve?

Answers

a. Acute

b. Straight

2. 
   

   The angleis about120 degrees.You can approximatethe measureof the angleusinga protractor, or
   by usingotherangles,suchas 90 and 30.

   
   


3. 
   

a. 85o30'

b. 12o9'

c. 114o57' 36"

a. 54.236o

b. 17.681o

a. 180

o

b. 90o

c. 30o

6. 360o


7. 5/6


8. Answerswill vary. Examples: 450 o, -270o