are the solutions of tanθ=a. Find x, y, and a. where 0^o≤θ≤360^o
p.s. 45^o=45 degree
e.g. sin(30^o)=0.5
更新1:
0^o≤θ≤360^o
更新2:
≤ 是亂碼，指少於或等於