Definição de focal | Babel Free
\fɔ.kal\Definições
One of two lines perpendicular to the axis of a cone such that the cosine of the angle between the line and the axis is equal to the ratio of the cosines o the semiangles of the cone.
Equivalentes
Exemplos
“Again, if the plane of the impressed couple intersects the mean plane between N and C, it will envelope the cone whose focals are ON, ON′, and whose internal axis is therefore OA.”
Nível QECR
B1
Intermediário
Esta palavra faz parte do vocabulário QECR B1 — nível intermediário.
Esta palavra faz parte do vocabulário QECR B1 — nível intermediário.
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