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In triangle ABC,I is the incenter,IB=10,IC=17 and inradius r =8 find 85cos(A/2)

In triangle ABC,I is the incenter,IB=10,IC=17 and inradius r =8
find 85cos(A/2)

Grade:10

1 Answers

raj kumar
33 Points
8 years ago
It`s solution is long and answer may be 76.5

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