AB isvertical pole with B at ground level and A at the top. A man finds that the angle of elevation of the point A from a certain point C on the ground is 60^(@). He movesaway from the pole along the line BC to a point D such that CD =7 m. From D the angle of elevation of the point A is 45^(@) then the hight of the pole is

AB isvertical pole with B at ground level and A at the top. A man find

1.	AB isvertical pole with B at ground level and A at the top. A man finds that the angle of elevation of the point A from a certain point C on the ground is 60^(@). He movesaway from the pole along the line BC to a point D such that CD =7 m. From D the angle of elevation of the point A is 45^(@) then the hight of the pole is
Answer» ` ( 7sqrt3)/(2) ( SQRT3- 1) ` ` ( 7sqrt3)/(2) ( sqrt3+ 1) ` ` 7sqrt3` ` ( 7sqrt3)/(2) ` ANSWER :B