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OpenStudy (anonymous):
help me please
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OpenStudy (anonymous):
OpenStudy (anonymous):
What is your question
OpenStudy (anonymous):
oh ok
OpenStudy (anonymous):
Use cosine law
OpenStudy (anonymous):
a^2=b^2+c^2-(2abc costheta)
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OpenStudy (anonymous):
r u there
OpenStudy (anonymous):
@aprilann143
OpenStudy (anonymous):
I know it, ill give a hint, A or B.
OpenStudy (anonymous):
ok i did it n i say b?
OpenStudy (anonymous):
yes ur correct
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