Calculate the exact values of the following a) cos210 b)

Mathematics
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Calculate the exact values of the following 

a) cos210                      b) sin120             

Feb 3rd, 2015

a) cos 210 =-0.866

b) sin 120=0.866

Feb 3rd, 2015

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Feb 3rd, 2015
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Feb 3rd, 2015
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