I would say none of the above. None of the answers are correct.
Sin(x-30)=sin(90-2x)
x-30=90-2x + 360k , where k= 0,1,2,3.......
3x= 120+360k
x= 40+120k
Answer:
Problem B
Step-by-step explanation:
Problem A=10
Problem B=88
x/2 as a verbal expression is half of 2.