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Grade 12Trigonometry

If cos(a-b)+ cos(b-c) + cos(c-a) = -3/2 prove that cosa + cosb+ cosc = sina + sinb + sinc =0

Profile image of mahendra shah
13 Years agoGrade 12
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1 Answer

Profile image of Nirmal Singh.
12 Years ago

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Regards,
Nirmal Singh
Askiitians faculty

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