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OpenStudy (anonymous):
Please help! Use a half-angle identity to find the exact value of cos19pi/12
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OpenStudy (anonymous):
|dw:1401689915547:dw|
OpenStudy (anonymous):
|dw:1401690053187:dw|
OpenStudy (anonymous):
how can I find cos19pi/12?
OpenStudy (anonymous):
19pi/12 is in Quad IV so its a pos x
OpenStudy (anonymous):
*positive x
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OpenStudy (anonymous):
its not a special angle...
OpenStudy (anonymous):
@zepdrix
OpenStudy (anonymous):
@goformit100 @sourwing
OpenStudy (goformit100):
it's correct
OpenStudy (anonymous):
but how do i solve it i didn't actually solve anything i just put it in the formula...
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OpenStudy (anonymous):
@goformit100
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