JEE MATHEMATICS MCQ: PROPERTIES OF TRIANGLES

1 Easy

1 of 1

Application +4 | -1

In a

\triangle A B C, R=

circumradius and

r=

inradius. The value of

\frac{a \cos A+b \cos B+c \cos C}{a+b+c}

is equal to

View answer and explanation

Correct option: C

\frac{r}{R}

Option C (

r/R

) is correct because by using trigonometric identities and the definitions of inradius and circumradius, the given expression simplifies to

r/R

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