In ∆ABC, prove thata(b²+c²)cosA b(c²+a²)cosB+c(a²+b²)cosC=3abc
Komal RajendraPrasad Yadav , 6 Years ago
Grade 12
Trigonometry> In ∆ABC, prove that a(b²+c²)cosA b(c²+a²)...
1 Answers
Arun
Last Activity: 6 Years ago
Dear student
I am not getting the answer as required even after toonmany attempts. Please check the question.
You can also attach an image. I will be happy to help you.
Regards
Arun
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