As an aircraft approaches landing, the components of its position are given by:
Velocity vector of aircraft during descent is given by:
81m/s (i hat) + -27m/s (j hat)
The value of the speed during the descent is:
What angle does the velocity vector make with the horizonal?
2. The attempt at a solution
I tried the Law of Sines sin90/85.381=sina/-27 and sin90/85.381=sina/81 but the angles of this triangle other then 90 are not what they are looking for. What do they mean horizontal?? help!