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2 articles trouvés pour ce sujet.
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The interior angles of a right triangle |
2006-05-20 |
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Greg pose la question :
I am wondering if there is a way to figure out the interior angles of a right triangle if we know ONLY the side lengths, and the trick is, we CANNOT use arctangent!
Leeanne Boehm and Penny Nom lui répond. |
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A problem with arccos. |
1997-06-09 |
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Vanessa Chan pose la question :
Prove: arc cos4/5 + arc cos (-5/13) = arc cos (-56/65)
Harley Weston lui répond. |
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