Mathematics - Properties of Triangle Question with Solution | TestHub

MathematicsProperties of Triangler1,r–R formula basedMedium2 minQB

MathematicsMediumsingle choice

In triangle ABC, r=1, r_1=7, and R=3, with usual inradius, A-exradius and circumradius notation. The triangle is

Answer:

Solution:

r_1-r=4R $sin^{2} (A /2)$ , so 6=12 $sin^{2} (A /2)$ , whence $sin^{2} (A /2)$ =1/2 and A=90°.

Stream:JEESubject:MathematicsTopic:Properties of TriangleSubtopic:r1,r–R formula based

⏱ 2mℹ️ Source: QB

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