Calculate the net force acting on the object in the following diagram:
cosine law / sine law
ONLY solving using cosine/sine laws.
The Attempt at a Solution
First using the cosine law to find the magnitude of the net force:
c2=122+152-2 x 12 x 15 (cos124)
Now using sine law to find the angle:
b=sin-1 (sin124/23.9 x 15)
Now I just don't know in which direction am I supposed to say it is pointing towards? Because if you look at the diagram and my work, it looks as if it is almost straight East. What should I do?