Difference between revisions of "2020 AMC 10B Problems/Problem 13"
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==Solution 1== | ==Solution 1== | ||
| − | You can find that every four moves both coordinates decrease by 2. Therefore, both coordinates need to decrease by two 505 times. You subtract, giving you <math>\boxed{\textbf{(B) } \text{(-1020,-990)}}</math>-happykeeper | + | You can find that every four moves both coordinates decrease by 2. Therefore, both coordinates need to decrease by two 505 times. You subtract, giving you <math>\boxed{\textbf{(B) } \text{(-1020,-990)}}</math> -happykeeper |
==See Also== | ==See Also== | ||
Revision as of 19:25, 7 February 2020
Problem
Andy the Ant lives on a coordinate plane and is currently at 
facing east (that is, in the positive 
-direction). Andy moves 
unit and then turns 
degrees left. From there, Andy moves 
units (north) and then turns degrees left. He then moves 
units (west) and again turns degrees left. Andy continues his progress, increasing his distance each time by unit and always turning left. What is the location of the point at which Andy makes the 
th left turn?
Solution 1
You can find that every four moves both coordinates decrease by 2. Therefore, both coordinates need to decrease by two 505 times. You subtract, giving you 
-happykeeper
See Also
2015 AMC 10B Problem 24 https://artofproblemsolving.com/wiki/index.php/2015_AMC_10B_Problems/Problem_24
Video Solution
~IceMatrix
See Also
| 2020 AMC 10B (Problems • Answer Key • Resources) | ||
| Preceded by Problem 12 |
Followed by Problem 14 | |
| 1 • 2 • 3 • 4 • 5 • 6 • 7 • 8 • 9 • 10 • 11 • 12 • 13 • 14 • 15 • 16 • 17 • 18 • 19 • 20 • 21 • 22 • 23 • 24 • 25 | ||
| All AMC 10 Problems and Solutions | ||
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