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OpenStudy (anonymous):
I need help!! pleaseeeee
OpenStudy (anonymous):
whats the question?
OpenStudy (anonymous):
What quadrant is -45° in?
OpenStudy (anonymous):
|dw:1382377204666:dw|
OpenStudy (anonymous):
helps ?
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OpenStudy (anonymous):
yeah I think its quadrant 2. But what is the answer? I don't know how to get it.
OpenStudy (anonymous):
its 4th
OpenStudy (anonymous):
the answer choices are (-3, -3)
(4, -4)
(5, 5)
(-2, 2)
OpenStudy (anonymous):
according to the diagram you could tell the answer
OpenStudy (anonymous):
there is only 1 point in the 4th quad
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OpenStudy (anonymous):
Any question?
OpenStudy (anonymous):
do you understand? want me to explain more ?
OpenStudy (anonymous):
lol yes please!
OpenStudy (anonymous):
ok so when you have 45 degree angle you know that the magnitudes (absolute value) of x and y are the same. (all your answers satisfy this condition)
now, when we measure angles, counter clockwise rotation means positive angle
while clockwise rotation means negative angle.
we start measuring angles from the positive x axis
OpenStudy (anonymous):
|dw:1382378058944:dw|
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OpenStudy (anonymous):
now when we go -45 degrees angle we go clockwise for 45 degrees right ?
OpenStudy (anonymous):
Yes, so the answer would definitely be both negative right?