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Mathematics 11 Online
OpenStudy (anonymous):

anyone know about half angle identity?

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):

\[\frac{ \sqrt{1-\cos330} }{ 2 }\]

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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