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A ladder 20 m long rest against a vertical wall so that the foot of the ladder is 9 m from the wall a. Find, correct to the nea...

Asked by Feranmi

A ladder 20m long rests against a vertical wall so that the foot of the ladder is 9 m from the wall
a)find correct to nearest degree the angle that the ladder makes with the wall
b)find correct to 1 decimal place the height above the ground at which the upper end of the ladders touches the wall
3 years ago

Answers

Answered by oobleck
draw a diagram, and you can see that
(a) sinθ = 9/20
(b) √(20^2 - 9^2) = ____ m
3 years ago

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