Question

Two vectors beginning at the same vertex of a triangle are 〈2,3〉 and 〈-3,2〉. Choose the correct classification of the triangle. Acute Obtuse Right Equilateral

Answer 1

It will be right angle triangle.  The two vectors beginning at the same vertex of a triangle are <2,3> and <-3,2> is classified as right-angled triangle. It is classified as a right-angled triangle because the dot product of the vectors are 0.