A ladder 20m long rest against a vertical wall so that the foot of is...
A ladder 20m long rest against a vertical wall so that the foot of is...
A ladder 20m long rest against a vertical wall so that the foot of is 9m from the wall. (a) find correct to the nearest degree the angle that the ladder makes with the wall. (b) find correct to 1d.p the height above the ground at which the upper end of the ladder touches the wall.?
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