A 15 metre long letter is placed against a wall to reach window 12 metre high find the distance of the foot of the ladder from the wall
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h=15^2
b=12^2
h^2=b^2+a^2
(15)^2=(12)^2+a^2
225=144+a^2
225-144=a^2
81=a^2
a=9cm
Hence distance is 9cm
b=12^2
h^2=b^2+a^2
(15)^2=(12)^2+a^2
225=144+a^2
225-144=a^2
81=a^2
a=9cm
Hence distance is 9cm
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