Question

in triangle ABC ,prove that r1+r2+r3-r=4R

Answer 1

Step-by-step explanation:

L.H.S = r1 + r2 + r3 – r = 4R = 2acosecA ∵ a/Asin = 2R = acosecA = R.H.S. Hence L.H.S. = R.H.SRead more on Sarthaks.com - https://www.sarthaks.com/311241/in-a-abc-prove-that-r1-r2-r3-r-4r-2a-coseca