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Mathematics 18 Online
OpenStudy (anonymous):

what is sin 20=

OpenStudy (raden):

just use the calculator, because 20 is not a special angle in trigono. too difficult to memorize it

OpenStudy (anonymous):

^ it's approximately 0.34202

OpenStudy (anonymous):

the answer is 0.912 not added all the numbers

OpenStudy (anonymous):

^ you're wrong http://www.wolframalpha.com/input/?i=sin20

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