Question

A ladder 20 m long leans against a vertical wall. It makes an angle of 30

Answer 1

When we represent this as a triangle, the hypytenues is 10m. We need to find the adjacent dist to the angle 60°. 

Cos 60°= 1/2= adj/hyp

                1/2= adj/10

                 10= 2adj

                adj= 5m

∴The foot of the ladder is 5m far from the wall

I HOPE THIS HELPS YOU

Answer 2

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Plz refer the solution given below