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In a triangle ABC,AB=5cm,BC=12cm,angle ABC=90Â°calculate 1)the length of AC. 2)the area of the triangle 3)the length of the perpendicular from B to AC

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c^2 = a^2+b^2

a = 1/2 bh

If the perp from B to AC is BD, then using similar triangles,

BD/AB = BC/AC

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