Difference between revisions of "2023 AMC 12A Problems/Problem 15"

(Solution 1)
(Solution 1)
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==Solution 1==
 
==Solution 1==
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By "unfolding" line APQRS into a straight line, we get a right triangle ABS.
 
By "unfolding" line APQRS into a straight line, we get a right triangle ABS.
<cmath>cos(\theta)=\frac{120}{100}</cmath>
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<cmath>\theta=\boxed{\textbf{(A) } arccos(\frac{5}{6})}</cmath>
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<math>cos(\theta)=\frac{120}{100}</math>
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 +
<math>\theta=\boxed{\textbf{(A) } cos^-1(\frac{5}{6})}</math>
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==See also==
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{{AMC12 box|year=2023|ab=A|num-b=14|num-a=16}}
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{{MAA Notice}}

Revision as of 22:46, 9 November 2023

Question

[uh someone insert diagram]

Solution 1

By "unfolding" line APQRS into a straight line, we get a right triangle ABS.

$cos(\theta)=\frac{120}{100}$

$\theta=\boxed{\textbf{(A) } cos^-1(\frac{5}{6})}$

See also

2023 AMC 12A (ProblemsAnswer KeyResources)
Preceded by
Problem 14
Followed by
Problem 16
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 12 Problems and Solutions

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