Math, asked by saipranava52, 9 months ago

in triangle ABC cosC +cosA/c+a +cosB/b =

Answers

Answered by anilkumarreddy540

0

Answer:

L.H.S =

c+a

cosC+cosA

+

b

cosB

=

b(c+a)

bcosC+bcosA+(c+a)cosB

=

b(c+a)

(bcosC+ccosB)+(bcosA+acosB)

=

b(c+a)

a+c

=

b

1

= R.H.S. Hence proved.

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