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Mathematics 13 Online
OpenStudy (anonymous):

The value of cos30° is . True or False

OpenStudy (anonymous):

|dw:1355531127507:dw|

OpenStudy (anonymous):

@Hero False

OpenStudy (anonymous):

@jim_thompson5910 I was right?

jimthompson5910 (jim_thompson5910):

yes

OpenStudy (anonymous):

I use the unit circle

jimthompson5910 (jim_thompson5910):

cos(30) = sqrt(3)/2 if it were cos(60), then it would be correct

OpenStudy (anonymous):

|dw:1355531199646:dw| Sorry, I meant to say sqrt(3), not sqrt(2).

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