3.4․14 Tangents and normals
condition: Find the angles between the intersecting curves \( y=f(x) \) and \( y=\varphi(x) \), having previously deduced the general formula. \[ f(x)=\sqrt{x+2}, \quad \varphi(x)=\sqrt{2-x} \]
Solving problems in three-dimensional space using tangents and normals, both straight lines and planes.