Flag Trigonometry> cosA+cosB+cosC=sinA+sinB+sinc find the va...
question mark

cosA+cosB+cosC=sinA+sinB+sinc
find the value of

cos(A-b)+cos(B-c)+cos(C-A)

Anantha Krishnan , 11 Years ago
Grade Select Grade
anser 2 Answers
Saurabh Koranglekar
Dear student

Please assume A,B,C to be pi/4

Solution is 0

Regards
Last Activity: 6 Years ago
Vikas TU
Dear student 
The soluton will not be zero , 
It will be 3 
Because Cos(pi/4 – pi/4) + Cos(pi/4 – pi/4) + Cos(pi/4 – pi/4) = 3 
Hope this will help 
Good Luck 
Last Activity: 6 Years ago
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