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anonymous
 one year ago
What is sin Pi/4 in a unit circle?
anonymous
 one year ago
What is sin Pi/4 in a unit circle?

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jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.7use this unit circle http://www.regentsprep.org/Regents/math/algtrig/ATT5/600pxUnit_circle_angles_svg.jpg locate the angle pi/4 then find the corresponding point on the unit circle for angle pi/4 what is the y coordinate of that point?

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.745 degrees = pi/4 radians the final answer isn't 45 degrees though

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0i'm not sure what to do after then....

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.7look at the attached image notice how I'm circling the point when the angle is pi/4

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.7what point did I circle? what is the y coordinate of that point?

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.7therefore, \[\Large \sin\left(\frac{\pi}{4}\right) = \frac{\sqrt{2}}{2}\]

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.7the y coordinate corresponds to sine the x coordinate corresponds to cosine

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so the answer is Pi/4?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0the answer is 1/root2

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0sorry, i meant sqrt 2

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.7Another example, \[\Large \sin\left(\frac{\pi}{3}\right) = \frac{\sqrt{3}}{2}\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0i understood, i just typed the wrong thing that iwas trying to say. but thank you!
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