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What are the sine, cosine, and tangent of \[3\pi/4\] radians?
draw the unit circle
|dw:1393161495852:dw|
|dw:1393161542007:dw|
45/2
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|dw:1393161553131:dw|
sin(3pi/4) = sin(pi - 3pi/4) = sin(pi/4) = \(\large \frac{\sqrt{2}}{2}\)
pie /4 do we jsut simplify
yes^^
is thaat the cos or sin
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wat do u mean
\[\sqrt{2}/\sqrt{2}\]
its a sin
and it should be \(\large \frac{\sqrt{2}}{2}\)
okay ?
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cos(3pi/4) equals \(\large -\frac{\sqrt{2}}{2}\)
to find the tan, just take the ratio : sin/cos
is it -1 @ganeshie8
\(\large \color{red}{\checkmark}\)
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