Math, asked by tanusingh33, 1 year ago

in the given triangle ABC prove that,

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Answered by rishu6845

1

Step-by-step explanation:

(b+c)cosA+(c+a)cosB+(a+b)cosc

=b cosA+c cosA+c cosB +a cosB + a cosC + bcosc

= (bcosC+c cosB)+(acosC+c cosA) +

(a cosB + b cos A)

= a + b + c

Answered by sonabrainly

1

Answer:

Step-by-step explanation:

bcosC+c cosB)+(acosC+c cosA) +

(a cosB + b cos A)

a + b + c

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