Question

?? pz.. ans my question
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Answer 1

Answer=Root3R=1.732R(approx.)

Let the above triangle be AOB

then AO=BO=R

Angle AOB=120

since AO=BO

implies other two angles are equal and equal to 30 degrees(sum of angles of triangle 180 degrees and angles opposite to equal sides are equal)

now AB=AOcos30+BOcos30

implies AB=Rcos30+Rcos30

=root3/2R+root3/2R which is equal to2root3/2R =root3R..

I hope it helps!! if it does do mark my answer as brainliest