Triantanachd

Ann an triantan ceart-cheàrnach, canar a' hypotenuse ris an taobh mu choinneamh a' cheàirn cheirt.

Ma tha \(x^\circ\) ann an aon dhe na ceàrnan eile, thèid againn air na taobhan eile ainmeachadh mar a chì thu san diagram seo.

Triangle x° angle. The sides labelled as Hypotenuse, Opposite (to x°) and Adjacent (to x°)

Feumaidh fios a bhith agad air na 3 co-mheasan triantanachd seo:

sine
cosine
tansaint

Bidh sinn gan giorrachadh gu:

sin
cos
tan

Seo na trì co-mheasan cudromach:

\(\sin (x^\circ ) = \frac{{\text{mu choinneamh}}}{{\text{hypotenuse}}}\)

\(\cos (x^\circ ) = \frac{{\text{dlùth}}}{{\text{hypotenuse}}}\)

\(\tan (x^\circ ) = \frac{{\text{mu choinneamh}}}{{\text{dlùth}}}\)

Triangle x° angle. The sides labelled as Hypotenuse, Opposite and Adjacent

Bidh cuid a' cumail cuimhne orra leis na ciad litrichean air an son nuair a bhios iad a' smaoineachadh dè an co-mheas a chleachdas iad gus ceist fhuasgladh.

Seo na litrichean:

SMH CDH TMD

Sine Mu choinneamh Hypotenuse

Cosine Dlùth Hypotenuse

Tansaint Mu choinneamh Dlùth