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Ignoring an error (Posted on 2018-08-30) Difficulty: 2 of 5
During a math exam, one of the students erroneously copied a trig problem, the original being:
In a triangle ABC, AB=9 cm, AC="...", and the angle BAC=60 deg.
Find the length of side BC.

"..." provided a number which the student copied, increasing it by 1 cm.
Still he got the correct answer.

What was it?

No Solution Yet Submitted by Ady TZIDON    
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  Subject Author Date
SolutionsolutionCharlie2018-08-30 14:31:32
student's luck (solved?)Steven Lord2018-08-30 09:14:57
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