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JEE MATHEMATICS MCQ: PROPERTIES OF TRIANGLES

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In a triangle, if r1+r3=kcos2B2{r_1} + {r_3} = kco{s^2}\frac{B}{2}, then kk is equal to
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Correct option: D
4R4R
Option D (4R4R) is correct because, after simplification using trigonometric identities and the area of a triangle formula, k is found to be equal to 4R.

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