Proof of Law of Cosine Equation I m a g e w i l l b e U p l o a d e d S o o n In the right triangle BAD, by the definition of cosine rule for angle : cos A = AD/c or AD= c cosA Subtracting above
Teachers dropping tuns of hw on us, so we just use math app :). The teacher sucks, she has no idea how to teach, better than photo math, this app most definetly helps when your child is just learning a new subject of math.