Alg 2 - Unit 6 & 7 Exam Review (Rational Fun. & Unit Circle)

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What is a rational function?

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How do you find the vertical asymptote of a rational function?

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To find the vertical asymptote of a rational function, set the denominator equal to zero and solve for x. The vertical asymptote occurs at the values of x that make the denominator zero.

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What is a horizontal asymptote?

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A horizontal asymptote is a horizontal line that the graph of a function approaches as x approaches positive or negative infinity. It indicates the behavior of the function at extreme values of x.

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What is the unit circle?

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The unit circle is a circle with a radius of 1 centered at the origin (0,0) in the coordinate plane. It is used to define trigonometric functions.

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What is the relationship between the unit circle and trigonometric functions?

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The unit circle provides a geometric interpretation of the sine and cosine functions, where the x-coordinate represents cosine and the y-coordinate represents sine for a given angle.

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How do you find the sine and cosine of common angles (0, 30, 45, 60, 90 degrees)?

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What is the significance of the angle in radians on the unit circle?

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