
Dalia P. answered 04/06/20
Helping students find their 'AHA!' moments in math.
To find the answers, you add and subtract multiples of 2 pi
- 7⫪/3+2⫪=7⫪/3+6⫪/3=13⫪/3 (positive)
- 7⫪/3-2⫪=7⫪/3-6⫪/3=1⫪/3 (positive)
- 1⫪/3-2⫪=1⫪/3-6⫪/3=-5⫪/3 ( negative)
- -5⫪/3-2⫪=-5⫪/3-6⫪/3=-11⫪/3 (negative )