Question 84

A 10 metre, long ladder is placed against a wall. It is inclined at angle of 30C to the ground. The distance of the foot of the ladder from the wall is

Solution

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This can be represented in diagrammatic form as,
 


Hence, by 30-60-90 theorem
Side opposite to 60 degree angle = $$\sqrt{3}$$/2 *hypotenuse = $$\sqrt{3}$$/2 *10 = 8.66 m

Therefore, the correct option is option C.
 

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