book Maths Puzzle Numerical Ability

If anglesA,B, and C are the sides of a triangle such that sin(A+B)=1/cos(C) and cos(A+B)=cos(C), then show that the triangle is a right triangle

Read Solution (Total 0)

book Other Question

I need help with this problem. "The distance "d", in meters, that an object falls after "t" seconds is given by the formula d = 4.9t(squared). Graoh this equation for 0 < t < 6, wh Simplify (5c-7)(-3)