Difference between revisions of "Talk:2021 AIME I Problems/Problem 9"
MRENTHUSIASM (talk | contribs) (Created page with "Based on Solution 1: Note: Instead of solving the system of equations (1)(2) which can be time consuming, by noting that <math>\triangle ACF \sim \triangle ABG</math> by AA,...") |
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Revision as of 04:06, 24 January 2024
Based on Solution 1:
Note: Instead of solving the system of equations (1)(2) which can be time consuming, by noting that by AA, we could find out , which gives . We also know that by Pythagorean Theorem on . . Then using Pythagorean Theorem on we obtain: substituting, we get: Finally, we solve to obtain .
~Chupdogs
However, I don't think is convincing. How do you find that by AA?