abc is a triangle in which ab=ac=4cm and angle a=90degree .calculate the length of perpendicular from A to BC.
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BC^2 = 4^2+ 4^2
BC. = 4√2 cm
hence length of perpendicular
=√(4^2 - (4√2÷2)^2 =4
BC. = 4√2 cm
hence length of perpendicular
=√(4^2 - (4√2÷2)^2 =4
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