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Triantanacht
| Question | Answer |
|---|---|
| Triantanacht | An Staidéar ar Thriantán |
| Teoirim Phíotagarás | Ar thriantán dronuilleach, is ionann achar na cearnóige a tharraingítear ar an taobhagán agus suim nan-achar sna cearnóga a tharraingítear ar an dá shlios eile. |
| x^2 = 64 + 36. x = | 10 |
| sin A | an slios urchomhaireach/an taobhagán |
| cos A | an slios cóngarach/an taobhagán |
| tan A | an slios urchomhaireach/an cóngarach |
| cos 72°18' | 0.3040 |
| sin A = 0.5216 | 31.44° |
| Triantán Dronuilleach | Triantán le uillin 90 |
| Triantán Comhchosach | Triantán le dhá slois agus an da uillin ag an mbun mar an gcéana. |
| Trántán Comhshleasach | Triantán le achan slois mar an gceanna |
| Teoirim Phíotagarás | T^2 = U^2 + C^2 |
| Suim na dtrí uillin i dtriantán ná | 180 |