Question bank/JEE Main/Mathematics
JEE MainMathematics
A triangle ABC has the feature, [IMAGE] then
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= a + b + c
= = sin A + sin B + sin C (using a = 2R sin
A etc.)
⇒ 4 sin A sin B sin C = sin A + sin B + sin C
[IMAGE] Also 2r = R ⇒ triangle is equilateral
= = sin A + sin B + sin C (using a = 2R sin
A etc.)
⇒ 4 sin A sin B sin C = sin A + sin B + sin C
[IMAGE] Also 2r = R ⇒ triangle is equilateral
Source: Grass-G / M-01 Mathematics Paper-1.docx
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