I have been spending hours trying to figure out these questions:
Solve for 0<θ<360
5cosθ - 12sinθ = -3
4sinθ - cosθ + 3 = 0
sinθ - cosθ = 1
√ 2cosθ + sinθ = 1
I know we're supposed to use the formula asinθ + bcosθ = rsin(θ+α), where r=√a²+b² and tanα = b/a.
Please help by solving them and...