Question 126
A and B are standing on the same side of a wall and observe that the angles of elevation to the top of the wall are $$45^\circ$$ and $$60^\circ$$ respectively. If the height of the wall is 50 M. the distance between A and B is: (Use $$\sqrt3=1.73$$ and $$\sqrt2=1.41$$)
Solution
So, $$50/(distance A)=tan45°=1$$
or, distance of $$A=50 m.$$
$$50/(distance of B)=tan60°=√3$$
or,distance of B $$=50/√3=28.86m.$$
So,distance between A and B
$$=50-28.86=21.14.$$
So, Option B is correct.
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