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anonymous
 one year ago
Solve the interval [0,2pi): 1+sin theta=1/2
A.2pi/3, 4pi/3
B.pi/6, 5pi/6
C.pi/3, 5pi/3
D.7pi/6, 11pi/6
anonymous
 one year ago
Solve the interval [0,2pi): 1+sin theta=1/2 A.2pi/3, 4pi/3 B.pi/6, 5pi/6 C.pi/3, 5pi/3 D.7pi/6, 11pi/6

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cwrw238
 one year ago
Best ResponseYou've already chosen the best response.2subtract 1 from both sides of the equation: sin theta = 1/2

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Do I graph sin theta =1/2?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0What does the [0,2pi) even mean?

cwrw238
 one year ago
Best ResponseYou've already chosen the best response.2[0,2pi) means the solutions in the range 0 to 2pi radians

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0So can that limit my answers, or it doesn't matter?

cwrw238
 one year ago
Best ResponseYou've already chosen the best response.2first find the reference angle use your calculator to find the angle whose sine is 1/2 enter sin1 (1/2) make sure that your calc is set to radians can you do that?

cwrw238
 one year ago
Best ResponseYou've already chosen the best response.2yes it limits the answers to angles in that range

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Yeah, althoght dont I need the unit circle for that, and can graphing be another way to solve the problem?

cwrw238
 one year ago
Best ResponseYou've already chosen the best response.2you can but its easier to use calc or you can use the dtandard triangle below: dw:1437850039490:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0When I type in arcsin (1/2) I get pie/6? Is that correct?

cwrw238
 one year ago
Best ResponseYou've already chosen the best response.2yes  and you see its pi.6 from the above trianggle

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Yeah, but does that mean that its a solution to the problem?

cwrw238
 one year ago
Best ResponseYou've already chosen the best response.2but the sine is 1/2 and the angles with this sine are in the 3rd and 4th quadrants

cwrw238
 one year ago
Best ResponseYou've already chosen the best response.2oh  ive written them in degrees 30 degrees = pi/6 radians

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Oh!!!!, so now what?

cwrw238
 one year ago
Best ResponseYou've already chosen the best response.2thats one angle: 7pi/6 can you work out the other?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I think so, let me trie! :0 By the way thank for yoir help, really appreciated!

cwrw238
 one year ago
Best ResponseYou've already chosen the best response.2one revolution = 2pi radians

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I don't know if its correct but I get 11pi/6?

cwrw238
 one year ago
Best ResponseYou've already chosen the best response.2thats correct 2pi  pi/6 = 12pi/6  pi/6 = 11pi/6

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Okay thanks again! :)
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