I will assume 3ɵ + ð/18 means 3ɵ + pi/18
look at your sine curve.
the sine is 1 at 90º or pi/2
so 3ɵ + pi/18 = pi/2
multiply 3ɵ + pi/18 = pi/2 by 18
54ɵ + pi = 9pi
ɵ = 8pi/54 = 4pi/27
how do I solve?
sin (3ɵ + ð/18) = 1
1 answer