prove that 4{bc cosA/2+ cosB/2 +ab cos C/2} = (a+b+c)^2

Question

Saurabh Koranglekar · Answer

Dear student

Assume equation to be true

To check the given question assume an equilateraltriangle of sides equal to 1 unit and see if LHS matches RHS

you will see it does not

contradictions never coexist, check the assumptions

hence kindly repost acorrect question

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prove that 4{bc cosA/2+ cosB/2 +ab cos C/2} = (a+b+c)^2

prove that 4{bc cosA/2+ cosB/2 +ab cos C/2} = (a+b+c)^2

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prove that 4{bc cosA/2+ cosB/2 +ab cos C/2} = (a+b+c)^2

prove that 4{bc cosA/2+ cosB/2 +ab cos C/2} = (a+b+c)^2

1 Answers

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Other Related Questions on Trigonometry

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