Hello,
-3+i*3√3=6(cos 120°+i sin 120°)
or 120°≡2π/3
Answer:
120° CW or 240° CCW
Step-by-step explanation:
Segment GO makes a 120° angle with segment PO, so the minimal rotation is 120° CW to move PQ to GH. Often rotation angles are measured CCW when direction is not specified. Hence the rotation angle would be 240° (CCW).
357/4 is the answer I'm not sure
This is a combination problem. The approach to this is by using the nCr method, where n is the number of total objects and r is the number of success. For example, if you want to get 3 red out of the total 4, then that would be 4C3. That means,
4C3 = 4!/3!(4 - 3)! = 4 ways
If you want to get 2 green out of the total 6, then that would be 6C2. That means,
6C2 = 6!/2!(6-2)! = 15 ways
Therefore, there are a total of 4+15 = <em>19 ways</em>.