Question

the angle of the top of an unfinished vertical building on a ground,at a point which is 100 m from the base of the building is 45 degree. how much height the building must be raised, so that its angle of elevation from the same point be 60 degree. take root 3 as 1.73​

Answer 1

Answer:

Step-by-step explanation:

Answer 2

Answer:

73m

Step-by-step explanation:

By using tan45 we get the base height of unfinished building as 100m.

now if we take tan60 with increased height as x, we get 100 x √3  = 100 +x.  By solving this equation we get 73m.