The vector a is in the plane Oxy Where Ox, Oy are the coordinate axes, and makes an angle with Ox, as in the above diagram. Find the components of a along Ox, Oy when a equals 10.
Is this right?
dot means multiply or times .
THere is nothing wrong with your answer , you are correct .
But to avoid confusion , use a different unknown such as x for horizontal and y for vertical . Anyways , it's just my opinion but its advisable for people who tend to mess up things like me .