sin(3pi/4)=_____ (answer choices attached inside!)

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sin(3pi/4)=_____ (answer choices attached inside!)

Mathematics
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Where are the attachments?
sorry right here haha :P answer choceis A,B,C,D from top to bottom :) **my answer: B. sq.rt 2/2 is that right? :)
Are you familiar with the unit circle?

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Other answers:

yes.. its a circle with the radius of 1 right?
Yes, but we have to figure out the exact value. So, what I would do is convert radians to degrees first. If you let pi = 180, then you will have: sin(3(180)/4) = sin(3(45))
That's your hint.
ok... :)
and they both equal each other!! So is my answer B. then? :)
B is the correct answer, but how did you figure it out?
well i used ur hint and plugged it into my calc and they both had .088 as the result and laso b4 that, i did sin3pi/4and i just converted it :) hehe
thanks :)
The only thing you need to figure it out is a unit circle. \[\sin(135^{\circ}) = \frac{\sqrt{2}}{2}\]
ok.. thanks :)

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