He ōwehenga o tētahi tapatoru hāngai e hono ana i tētahi koki ki tōna tapa pātata me tōna tapa tauaro. E pēnei ana te tuhi i te ōwehenga:
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Arā hoki te ture pātapa e hāngai ana ki ngā tapatoru katoa, e hono ana i ētahi tapa e rua me ō rāua koki tauaro:

A ratio which connects an angle of a right-angled triangle with its adjacent side and its opposite side. The ratio is written as:
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There is also a law of tangents which applies to all triangles, connecting any two sides of a triangle with their opposite angles.

Whakamahia te tātaitai hei kimi i te uara o te ōwehenga pātapa o te 35º.
Whakamahia te ōwehenga pātapa hei tātai i te rahi o te koki.
Mēnā he ōrite te roa o te tapa pātata me te tapa tauaro, ko te 1 te ōwehenga pātapa.