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# Solutions for Chapter 9: TRIGONOMETRIC IDENTITIES AND THEIR APPLICATIONS ## Full solutions for Functions Modeling Change: A Preparation for Calculus | 4th Edition

ISBN: 9780470484753 Solutions for Chapter 9: TRIGONOMETRIC IDENTITIES AND THEIR APPLICATIONS

Solutions for Chapter 9
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##### ISBN: 9780470484753

Since 35 problems in chapter 9: TRIGONOMETRIC IDENTITIES AND THEIR APPLICATIONS have been answered, more than 40273 students have viewed full step-by-step solutions from this chapter. This expansive textbook survival guide covers the following chapters and their solutions. This textbook survival guide was created for the textbook: Functions Modeling Change: A Preparation for Calculus , edition: 4. Functions Modeling Change: A Preparation for Calculus was written by and is associated to the ISBN: 9780470484753. Chapter 9: TRIGONOMETRIC IDENTITIES AND THEIR APPLICATIONS includes 35 full step-by-step solutions.

Key Calculus Terms and definitions covered in this textbook
• Angle between vectors

The angle formed by two nonzero vectors sharing a common initial point

• Chord of a conic

A line segment with endpoints on the conic

• Conic section (or conic)

A curve obtained by intersecting a double-napped right circular cone with a plane

• Cubic

A degree 3 polynomial function

• Higher-degree polynomial function

A polynomial function whose degree is ? 3

• Inferential statistics

Using the science of statistics to make inferences about the parameters in a population from a sample.

• Inverse cotangent function

The function y = cot-1 x

• Leading coefficient

See Polynomial function in x

• Main diagonal

The diagonal from the top left to the bottom right of a square matrix

• Matrix, m x n

A rectangular array of m rows and n columns of real numbers

• Order of an m x n matrix

The order of an m x n matrix is m x n.

• Order of magnitude (of n)

log n.

• Projectile motion

The movement of an object that is subject only to the force of gravity

• Quadratic formula

The formula x = -b 2b2 - 4ac2a used to solve ax 2 + bx + c = 0.

• Real part of a complex number

See Complex number.

• Row operations

See Elementary row operations.

• Sample survey

A process for gathering data from a subset of a population, usually through direct questioning.

• Standard unit vectors

In the plane i = <1, 0> and j = <0,1>; in space i = <1,0,0>, j = <0,1,0> k = <0,0,1>

• Variable (in statistics)

A characteristic of individuals that is being identified or measured.

• y-axis

Usually the vertical coordinate line in a Cartesian coordinate system with positive direction up, pp. 12, 629.