Question

A ship heads due north for x miles, then turns 25° east of north and travels for another y miles. Which expressionrepresents the distance the ship is from the original starting point?X+y-2xycos 1550o V x2 + y2 – 2xycos 1550O x+y= /2xycos 250O x2 + y2-2xycos 25°

Answer 1

`\begin{gathered} \text{Use cosine rule,} \\ \text{Distance}=x^2+y^2-2xy\cos 115^(\circ)\text{ (Ans)} \\ \end{gathered}`