The tangent slope is *defined* as 
. (this relates to the function tangens, tan, of an angle).
Because it is defined as a ratio of the change in y to the change in x, both coordinates are needed. Having only one coordinate, the slope would be undetermined. Lmk if you have questions.
Answer and Explanation: The way to find the complement of an 11-degree angle is to subtract 11 from 90: 90 - 11 = 79.
1) total-spent=left over to spend on brother
1.1)20-3.5=16.5
2)left over to spend on brother ÷ price of baseball cards
2.2) 16.5 ÷ 1.25 =13.2
3) you can buy 13 cards and have 20 cents left
D
Because the height of the Eiffel Tower would need to be 119.2 meters taller to be 443.2 meters tall
1/4 = 5/20
2/5 = 8/20
8/20 + 5/20 = 13/20 has been spent
