Answer:
1.5
(9÷6)
u basically just divide that's all
Answer=8/9
16/18=8/9
if you divide 16 and 18 by 2, you get 8 and 9
The point (-5,6) is located in quadrant ll
Try this option:
1. rule: cosα=sin(90°-α), it means that cos 3x=sin(90°-3x);
2. sin(90°-3x)=sin(x+18°); ⇔ 90°-3x=18°+x; ⇔ x=18°.
Answer: x=18°.
