Answer:
Option 4.
Step-by-step explanation:
Reciprocal of the second fraction turns the product into the division of the two fractions, which equals to 1.


Two fractions are said to be the reciprocal or multiplicative inverse of each other, if their product is 1.
Proportional because it is constantly adding .99¢
Answer:
4 right angles.
Step-by-step explanation:
1 right angle: 90 degrees
360/90= 4