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39 Cards in this Set
- Front
- Back
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Any point on a line separates the line into two parts, each called a _______.
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Half-line
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A portion of a line that continues indefinitely in one direction from a point on the line
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Ray
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The point at the end of the ray.
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Endpoint
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Common Definition: The union of two rays having a common endpoint
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Angle
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Trig Definition: Formed by rotating a given ray about its endpoint to some terminal position.
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Angle
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The original ray of the angle
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Initial Side
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The terminal position of the ray (second ray).
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Terminal Side
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The common endpoint of the two rays forming the angle
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Vertex
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Angles formed by a counterclockwise rotation
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Positive Angle
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Angles formed by a clockwise rotation
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Negative Angle
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Determined by the amount of rotation of the initial side.
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Measure of an Angle
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An angle formed by rotating the initial side counterclockwise exactly once until it coincides with itself (one complete revolution)
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is defined to have a measure of 360 degrees
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An angle whose vertex is at the origin of a Cartesian coordinate system and its initial side is on the positive x-axis. In trigonometry, the assumption is made that all angles are in standard position unless indicated otherwise
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Standard Position
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Angles are often classified according to their measure
An angle measuring 180 degrees is a . |
Straight Angle
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Angles are often classified according to their measure
An angle measuring 90 degrees is a . |
Right Angles
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Angles are often classified according to their measure
An angle measuring between 0 degrees and 90 degrees is a . |
Acute Angles
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Angles are often classified according to their measure
An angle measuring between 90 degrees and 180 degrees is a . |
Obtuse Angles
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Two POSITIVE angles whose sum is 90 degrees
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Complementary Angles
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Two POSITIVE angles whose sum is 180 degrees
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Supplementary Angles
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Angles whose terminal side lies on a coordinate axis. When indicating where the terminal side is located,
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Quadrantal Angles
Rember to:give the axis and whether it is the positive or negative portion of the axis |
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Angles in standard position that have the same terminal side. Every angle has an unlimited number of coterminal angles
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Coterminal Angles
Remember :The measures of coterminal angles are not equal to each! |
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What is the function for Cos
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What is the function for Cot?
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What is the function for Csc?
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What is the function for Sec?
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What is the function for Sin?
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What is the function for Tan?
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