Teorema de Carnot. Lema 2

Topic:Vectors 2D (Two-Dimensional), Addition, Algebra, Angles, Area, Calculus, Circle, Circumcircle or Circumscribed Circle, Constructions, Geometry, Incircle or Inscribed Circle, Limits, Straight Lines, Mathematics, Median Value, Multiplication, Numbers, Orthocenter, Perimeter, Pie Chart or Circle Chart, Polygons, Rectangle, Reflection, Secant Line or Secant, Square, Tangent Line or Tangent, Triangles, Trigonometric Functions, Trigonometry, Unit Circle, Vectors