# TRIGONOMETRY GLOSSARY

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Title Description
Magnitude, Powers of Ten Often when we compare the multiplication by various powers of ten we speak of the magnitude of the effect of the multiplication.
Magnitude, Vectors The Magnitude of a vector is the length of the vector.
We may apply a Pythagorean relation to the perpendicular components of the vector to find the length.
Major Axis Certain conic sections have a Major Axis, a line (segment) between vertices.
Median, Triangle A triangle has three Medians, each a line segment from a vertex to the midpoint of the opposite side of the triangle.
Medians are concurrent at the centroid.
Minor Axis A line or line segment specific to certain conic sections.
Minute, Angle For angles, one Minute is one-sixtieth of a degree.
One Minute is equivalent to 1/21600 of a circular rotation.
Moment of Inertia Each shape or body has an associated Moment of Inertia related to mass distribution and the choice of the axis around which the body is rotated.
Multiplicative Inverse Another name for Multiplicative Inverse is reciprocal.
Reciprocals multiply to one.

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