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prabhav sidhaye Grade: 11
        if sinA+sinB+sinC=cosA+cosB+cosC=0

then show dat
cos2A+cos2B+cos2C=sin2A+sin2B+sin2C=0
6 years ago

Answers : (2)

Aman Bansal
592 Points
										

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.....


 BEST OF LUCK..!!!!


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AMAN BANSAL                

6 years ago
harshal devikar
18 Points
										













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


4 years ago
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