Pythagorean theorem
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能否不用tang反函数?
-穷则思变-
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12/19/2017 postreply
20:27:13
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You may have different solutions, but there is only one answer t
-newton123-
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12/20/2017 postreply
10:08:01
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error must be corrected.
-newton123-
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12/23/2017 postreply
15:28:03