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OpenStudy (anonymous):
question will be attached plz help with problem if you can Thanks:)
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OpenStudy (anonymous):
OpenStudy (muhammad_nauman_umair):
first one
OpenStudy (muhammad_nauman_umair):
cos theta=1/2-1 cos theta=-1/2 as cos is -ve in 2nd and 3rd quadrant so the first option is best
OpenStudy (anonymous):
thank you
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