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Mathematics 28 Online
OpenStudy (anonymous):

find the exact value of sin (-120)

OpenStudy (anonymous):

I answered this :(

OpenStudy (anonymous):

no you didnt.. thats wrong

OpenStudy (anonymous):

Well, you need to know the exact value of sin(60), obviously, but I assumed you did...

OpenStudy (anonymous):

If not, draw a triangle with angles 30, 60 and 90 (half an equilateral)

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