JEE MATHEMATICS MCQ: PROPERTIES OF TRIANGLES

1 Easy

1 of 1

Application +4 | -1

In a

\Delta \,ABC,\,\,\frac{{\cos \,\,C + \cos \,\,A}}{{c + a}}\,\, + \,\,\frac{{\cos \,\,B}}{b} =

View answer and explanation

Correct option: B

\frac{1}{b}

Option B (

\frac{1}{b}

) is correct because by applying sum-to-product identities and sine rule, the expression simplifies to

\frac{1}{b}

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