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OpenStudy (anonymous):
Calculate the value of A to one decimal place
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OpenStudy (anonymous):
OpenStudy (anonymous):
@Michele_Laino could you please help me
OpenStudy (anonymous):
Law of cosine
OpenStudy (anonymous):
\[7^2=9^2+5^2-2(9)(5)\cos(A)\] Find A
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OpenStudy (anonymous):
49=81+25-90cosA?? @OpenStudyð
OpenStudy (anonymous):
Yup
OpenStudy (anonymous):
okay And then what
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