The angle of elevation of a tree from a point on the level ground 15 m from its base is 45°. The height of the tree is

The angle of elevation of a tree from a point on the level ground 15 m

1.	The angle of elevation of a tree from a point on the level ground 15 m from its base is 45°. The height of the tree is
A.	10 m
B.	15 m
C.	\({15\over \sqrt2}m\)
D.	\(15\sqrt{2}~m\)
Answer» C. \({15\over \sqrt2}m\)