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is the trigonometric ratio of cos225degrees 1? (im in the unit circle)
 one year ago
 one year ago
is the trigonometric ratio of cos225degrees 1? (im in the unit circle)
 one year ago
 one year ago

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dpaIncBest ResponseYou've already chosen the best response.0
no.... cos (225 degrees) is NOT 1
 one year ago

dpaIncBest ResponseYou've already chosen the best response.0
since you're on the unit circle.... look at the xcoordinate of 225 degrees...
 one year ago

dpaIncBest ResponseYou've already chosen the best response.0
cos (225 degrees) = the xcoordinate of the point on the unit circle.
 one year ago

ihatealgebrasomuchBest ResponseYou've already chosen the best response.0
im confused though, because if its a right triangle, and the reference angle is 45 degrees, then the opposite angle is also 45 degrees, making it a 454590 triangle and the two legs' side lengths are the same so they would both be dw:1359842106830:dw
 one year ago

dpaIncBest ResponseYou've already chosen the best response.0
\(\large cos(225 ^\circ)=\frac{\sqrt2}{2} \) \(\large tan (225 ^\circ)=\frac{\frac{\sqrt2}{2}}{\frac{\sqrt2}{2}}=1 \)
 one year ago

ihatealgebrasomuchBest ResponseYou've already chosen the best response.0
dw:1359842455017:dw
 one year ago

ihatealgebrasomuchBest ResponseYou've already chosen the best response.0
its just negative square root 2 /2?
 one year ago
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