66.666666 repeated decimal
You would keep the 66 as is, and divide 2 by 3. That equals 0.66666666666 repeated, so the answer would be 66.666666 (rounded: 66.67)
Answer: 
Step-by-step explanation:

Answer:
1/3
Step-by-step explanation:
6+-5 2/3 = 6-5 2/3, so the difference is 1/3
Try A) 60 degrees; 1/2. Your answer was incorrect because cos(60 degrees) is 1/2, cos(30 degrees) is square root 3 /2 not 1 or square root 2 /2