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# Solutions for Chapter 5.3: Double-Angle, Power-Reducing, and Half-Angle Formulas

## Full solutions for Precalculus | 4th Edition

ISBN: 9780321559845

Solutions for Chapter 5.3: Double-Angle, Power-Reducing, and Half-Angle Formulas

Solutions for Chapter 5.3
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##### ISBN: 9780321559845

Precalculus was written by and is associated to the ISBN: 9780321559845. This textbook survival guide was created for the textbook: Precalculus, edition: 4. Chapter 5.3: Double-Angle, Power-Reducing, and Half-Angle Formulas includes 115 full step-by-step solutions. Since 115 problems in chapter 5.3: Double-Angle, Power-Reducing, and Half-Angle Formulas have been answered, more than 75785 students have viewed full step-by-step solutions from this chapter. This expansive textbook survival guide covers the following chapters and their solutions.

Key Calculus Terms and definitions covered in this textbook
• Bar chart

A rectangular graphical display of categorical data.

• Circle

A set of points in a plane equally distant from a fixed point called the center

• Combinations of n objects taken r at a time

There are nCr = n! r!1n - r2! such combinations,

• Common logarithm

A logarithm with base 10.

• Descriptive statistics

The gathering and processing of numerical information

• Directed line segment

See Arrow.

• Direction vector for a line

A vector in the direction of a line in three-dimensional space

• Dot product

The number found when the corresponding components of two vectors are multiplied and then summed

• Inequality

A statement that compares two quantities using an inequality symbol

• Inferential statistics

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

• Measure of an angle

The number of degrees or radians in an angle

• Newtonâ€™s law of cooling

T1t2 = Tm + 1T0 - Tm2e-kt

• Real number

Any number that can be written as a decimal.

• Repeated zeros

Zeros of multiplicity ? 2 (see Multiplicity).

• Richter scale

A logarithmic scale used in measuring the intensity of an earthquake.

• Solve by substitution

Method for solving systems of linear equations.

• Standard position (angle)

An angle positioned on a rectangular coordinate system with its vertex at the origin and its initial side on the positive x-axis

• Vector equation for a line in space

The line through P0(x 0, y0, z0) in the direction of the nonzero vector V = <a, b, c> has vector equation r = r0 + tv , where r = <x,y,z>.

• Weights

See Weighted mean.

• Xmax

The x-value of the right side of the viewing window,.

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