TRIGONOMETRY GLOSSARY

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Title Description
Parametric Equation In a general sense, we have a Parametric Equation when we define something in specific terms of something else.
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Period Measured in time, or angle, or even sometimes distance, the Period of a repetitive function is the time (or angle or distance) it takes to complete a cycle.
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Periodic Functions that repeat a cycle over and over again are considered Periodic.
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Perpendicular At right angles.
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Phase Shift This applies to sinusoids moved left or right by a change to the argument (the angle).
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Plane An infinite expanse of points in two dimensions.
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Point- Play_video
Polar Complex Number We may express complex numbers in trigonometric form.
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Polar Coordinates In labeling a point in a plane we need two coordinates.
In Polar Coordinates we use a radius and an angle, as (r, theta).
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Polar-Rectangular Conversion An algorithm for changing (r, theta) to (x, y).
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Polygon A closed plane figure with straight sides.
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Polyhedron A geometric solid with faces that are polygons.
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Postulate A far-reaching conjecture or sense of reasoning for which an obvious and substantive base appears most reasonable.
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Precision The quality of finer measurement or estimation is termed Precision. Play_video
Projectile Motion Projectile Motion is a parabolic arc caused by gravity.
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Proportional In a (constant) ratio.
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Psi The 23rd letter (next-to-last) of the Greek alphabet.
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Pythagorean Identities sin²x + cos²x = 1; 1 + tan²x = sec²x; 1 + cot²x = csc²x Play_video

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