JEE MATHEMATICS MCQ: PROPERTIES OF TRIANGLES

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Application +4 | -1

In a triangle

ABC,\,\,\cos \,\,A + \cos \,\,B + \cos \,\,C =

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 rewritten in terms of the inradius

r

and circumradius

R

1 + \frac{r}{R}

More Questions from PROPERTIES OF TRIANGLES

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A

2 s