In the diagram , AN and BM are perpendicular to the tangent at R . O is the centre of the circle with diameter AB . Prove that (1) triangle ANR and RMB are similar I managed to prove this part (2) NR=MR stuck with this .
Follow Math Help Forum on Facebook and Google+
produce a line AM that intersects with OR at C. you will see that triangles ACO and AMB are similar. triangles ANM and CRM are also similar. Since AO:OB = 1:1 Hence AC:CM = 1:1 and therefore NR:RM = 1:1 which means NR = MR
View Tag Cloud