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, 10:54, 10 July 2014
#In Right angled ∆ABC,∟BAC= 90°,∟B: ∟C = 1:2 andAC= 4cm.calculate thelenght of BC
#A door of width 6 mt has an archabove it having aheight of 2 mt , find the radius if the arch
# The sides of a right angled triangle are in an AP. Show that sides are in ther ratio 3:4:5