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# Solutions for Chapter 5.5: Multiple Angle and Product-to-Sum Formulas

## Full solutions for Precalculus | 7th Edition

ISBN: 9780618643448

Solutions for Chapter 5.5: Multiple Angle and Product-to-Sum Formulas

Solutions for Chapter 5.5
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##### ISBN: 9780618643448

This textbook survival guide was created for the textbook: Precalculus, edition: 7. Chapter 5.5: Multiple Angle and Product-to-Sum Formulas includes 139 full step-by-step solutions. Since 139 problems in chapter 5.5: Multiple Angle and Product-to-Sum Formulas have been answered, more than 21636 students have viewed full step-by-step solutions from this chapter. Precalculus was written by and is associated to the ISBN: 9780618643448. This expansive textbook survival guide covers the following chapters and their solutions.

Key Calculus Terms and definitions covered in this textbook
• Central angle

An angle whose vertex is the center of a circle

• Distance (in a coordinate plane)

The distance d(P, Q) between P(x, y) and Q(x, y) d(P, Q) = 2(x 1 - x 2)2 + (y1 - y2)2

• Factor

In algebra, a quantity being multiplied in a product. In statistics, a potential explanatory variable under study in an experiment, .

• Factored form

The left side of u(v + w) = uv + uw.

• Focal width of a parabola

The length of the chord through the focus and perpendicular to the axis.

• Horizontal line

y = b.

• Imaginary axis

See Complex plane.

• Instantaneous velocity

The instantaneous rate of change of a position function with respect to time, p. 737.

• Linear equation in x

An equation that can be written in the form ax + b = 0, where a and b are real numbers and a Z 0

• Maximum r-value

The value of |r| at the point on the graph of a polar equation that has the maximum distance from the pole

• nth root of a complex number z

A complex number v such that vn = z

• Product rule of logarithms

ogb 1RS2 = logb R + logb S, R > 0, S > 0,

• Random variable

A function that assigns real-number values to the outcomes in a sample space.

• Rational zeros

Zeros of a function that are rational numbers.

• Right angle

A 90° angle.

• Statute mile

5280 feet.

• Unit vector

Vector of length 1.

• Ymin

The y-value of the bottom of the viewing window.

• z-axis

Usually the third dimension in Cartesian space.

• Zoom out

A procedure of a graphing utility used to view more of the coordinate plane (used, for example, to find theend behavior of a function).

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