2)a.
Solve the simultaneous equations k sin x = 3, k cos x=7 for 0° ≤x≤ 360°, giving
your answers to the nearest 0.1º.
b.
State the coordinates of the maximum and minimum values of f(x) = k sin x for
0° ≤x≤ 360°.


I already have an answer for part a:
Rate = tan^-1(3/7)
= 23.2, 203.2
But need help solving part (b) please