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if sinA+sinB+sinC=cosA+cosB+cosC=0 then show dat cos2A+cos2B+cos2C=sin2A+sin2B+sin2C=0

if sinA+sinB+sinC=cosA+cosB+cosC=0
then show dat
cos2A+cos2B+cos2C=sin2A+sin2B+sin2C=0

Grade:11

2 Answers

Aman Bansal
592 Points
10 years ago

dear studenr,

I tried to solve your question many times but in vain....

i think there is some error in your question ..plz rectify the error and then post it.....

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harshal devikar
18 Points
9 years ago

Q. if sinA+sinB+sinC=cosA+cosB+cosC=0 then show dat cos2A+cos2B+cos2C=sin2A+sin2B+sin2C=0


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