ko biết
\(\tan a=\frac{22,1}{S}\)
\(\cot a=\frac{s}{22,1}\)
b , Khi \(a=1^015'=\frac{22,1}{s}\Rightarrow S=\frac{22,1}{\tan1^015'}=1012,83\left(m\right)\)
ko biết
\(\tan a=\frac{22,1}{S}\)
\(\cot a=\frac{s}{22,1}\)
b , Khi \(a=1^015'=\frac{22,1}{s}\Rightarrow S=\frac{22,1}{\tan1^015'}=1012,83\left(m\right)\)