If length of the side BC of a △ ABC is 4 cm and ∠ BAC = 12 0 ∘ , then the distance between incentre \& excentre of the circle touching the side BC internally is

II 1 = AI 1 − AI = ( r 1 − r ) cos c A /2 = a tan A /2 cos c A /2 = cos A /2 a = 8

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Mathematics - Properties of Triangle Question with Solution | TestHub

MathematicsProperties of TriangleLength of angle bisector and median / Dist. between sp. PointsEasy2 minQB

MathematicsEasyinteger

If length of the side BC of a $△ ABC$ is 4 cm and $∠ BAC = 12 0^{\circ}$ , then the distance between incentre \& excentre of the circle touching the side BC internally is

Answer:

Solution:

$II_{1} = AI_{1} - AI$

$= (r_{1} - r) cos c A /2 = a tan A /2 cos c A /2 = \frac{a}{cos A /2} = 8$

Stream:JEESubject:MathematicsTopic:Properties of TriangleSubtopic:Length of angle bisector and median / Dist. between sp. Points

⏱ 2mℹ️ Source: QB

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