JEE MATHEMATICS MCQ: PROPERTIES OF TRIANGLES

1 Easy

1 of 1

Application +4 | -1

In a

\Delta \;ABC,\left( {b + c} \right)\left( {bc} \right)\cos A + \left( {a + c} \right)\left( {ac} \right)\cos B + \left( {a + b} \right)\left( {ab} \right)\cos C

View answer and explanation

Correct option: B

{a^3} + {b^3} + {c^3}

Option B (

{a^3} + {b^3} + {c^3}

) is correct because the given expression simplifies to this form using the cosine rule.

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