For the following questions answer them individually
A person walking along a straight road towards a hill observes at two points with distance $$\sqrt{3}$$ km. between them the angles of elevation of the hill to be $$30^\circ$$ and $$60^\circ$$. What is the height of the hill?
If $$\frac{6}{x + y} + \frac{15}{x - y} = 8$$ and $$\frac{10}{x + y} - \frac{9}{x - y} = 2$$ then 3x + 2y =
In a triangle PQR, $$\angle P = x^\circ, \angle Q = 3x^\circ, \angle R = y^\circ$$. If $$3y - 5x = 30$$, then the triangle is
If -22 is the $$n^{th}$$ term of the arithmetic progression 5, 2, -1, ......., then n =
If the sum of the first three terms of a geometric progression is $$\frac{39}{10}$$ and if their product is 1. Then common ratio is
If the $$21^{st}$$ and $$22^{nd}$$ terms in the expansion of $$(1 + x)^{44}$$ are equal then x =