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OpenStudy (anonymous):
anyone know about half angle identity?
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rvc (rvc):
trigonometry?
rvc (rvc):
well what do you need to know about it?
rvc (rvc):
where is the problem?
rvc (rvc):
I'll try my best to help you
OpenStudy (anonymous):
\[\frac{ \sqrt{1-\cos330} }{ 2 }\]
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OpenStudy (anonymous):
Rewrite
OpenStudy (anonymous):
using a half-angle identity.
OpenStudy (anonymous):
sin 165° cos 165° tan 150° sin 660° cos 660°
rvc (rvc):
|dw:1430894384215:dw|
rvc (rvc):
|dw:1430894481187:dw|
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