The building I focused at an angle 30°. When I moved 5 m building I focused at an angle 45°. What is the height of the building?
x = 6.8 m
tan30°=x/y tan45°=x/(y−5) tan45°=x/(x/tan30°−5) x=tan(30∘)tan(45∘)​−15⋅tan(45∘)​=6.8 m
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