PRE-CAL EXAM REVIEWER

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8 Terms

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UNIT CIRCLE

It is a circle whose center is at the origin of the rectangular coordinate system and whose radius r is 1.

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Degree

unit of measure for an angle in mathematics

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Radian

denoted by the symbol rad. It is the unit of measuring angles which is based on the arc length and the radius

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Reference Angles

It is an acute angle formed by the terminal side of a given angle in the

standard position and the x-axis

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CIRCULAR FUNCTIONS AND THEIR GRAPHS

It can be defined in terms of an arclength and the coordinates of the terminal point of the arc on the unit circle.

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TRIGONOMETRIC IDENTITIES

is an identity that involves trigonometric functions of one or more variables

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Conditional Equation

is an equation that is satisfied by at least one real number

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Identity equation

is an equation that is true for all real numbers and whose both sides are

defined and identical.