I am assuming by 28,7 you mean 28.7.
This is a 90 degree triangle. You know the base to be 28.7 m. You need to find height which is the side directly opposite of the angle of elevation. Knowing the base value (which is adjacent to the angle of elevation), you can calculate the heigh of the helicopter using tan x = opposite / adjacent.
opposite = tan x (adjacent)
= tan 30 (28.7)
Plug this in your calculator and you have your answer.
A man sees a helicopter in the air at an unknown height.The man is standing 28,7m from point directly below the helicopter and measures the angle of elevation to be 30 degree.Calculate the height of helicopter
1 answer
1 answer