JEE MATHEMATICS MCQ: PROPERTIES OF TRIANGLES

1 Easy

1 of 1

Application +4 | -1

In a

\Delta \;ABC,\cos A + \cos B + \cos C

is equal to

View answer and explanation

Correct option: A

1 + \frac{r}{R}

Option A (

1 + \frac{r}{R}

) is correct because the expression

\cos A + \cos B + \cos C

can be simplified using trigonometric identities and the relationship between inradius (r) and circumradius (R).

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A

2 s