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# Solutions for Chapter 9.2: THE LAW OF SINES AND THE LAW OF COSINES ## Full solutions for Precalculus: With Unit Circle Trigonometry (with Interactive Video Skillbuilder CD-ROM) (Available 2010 Titles Enhanced Web Assign) | 4th Edition

ISBN: 9780534402303 Solutions for Chapter 9.2: THE LAW OF SINES AND THE LAW OF COSINES

Solutions for Chapter 9.2
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##### ISBN: 9780534402303

This expansive textbook survival guide covers the following chapters and their solutions. Precalculus: With Unit Circle Trigonometry (with Interactive Video Skillbuilder CD-ROM) (Available 2010 Titles Enhanced Web Assign) was written by and is associated to the ISBN: 9780534402303. This textbook survival guide was created for the textbook: Precalculus: With Unit Circle Trigonometry (with Interactive Video Skillbuilder CD-ROM) (Available 2010 Titles Enhanced Web Assign), edition: 4. Chapter 9.2: THE LAW OF SINES AND THE LAW OF COSINES includes 64 full step-by-step solutions. Since 64 problems in chapter 9.2: THE LAW OF SINES AND THE LAW OF COSINES have been answered, more than 24971 students have viewed full step-by-step solutions from this chapter.

Key Calculus Terms and definitions covered in this textbook
• Compounded annually

See Compounded k times per year.

• Double inequality

A statement that describes a bounded interval, such as 3 ? x < 5

• Exponential decay function

Decay modeled by ƒ(x) = a ? bx, a > 0 with 0 < b < 1.

• Exponential growth function

Growth modeled by ƒ(x) = a ? b a > 0, b > 1 .

• Extraneous solution

Any solution of the resulting equation that is not a solution of the original equation.

• Half-life

The amount of time required for half of a radioactive substance to decay.

• Half-plane

The graph of the linear inequality y ? ax + b, y > ax + b y ? ax + b, or y < ax + b.

• Imaginary axis

See Complex plane.

• Inverse sine function

The function y = sin-1 x

• Nautical mile

Length of 1 minute of arc along the Earth’s equator.

• nth root of a complex number z

A complex number v such that vn = z

• Power regression

A procedure for fitting a curve y = a . x b to a set of data.

• Power-reducing identity

A trigonometric identity that reduces the power to which the trigonometric functions are raised.

• Product rule of logarithms

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

An equation that can be written in the form ax 2 + bx + c = 01a ? 02

• Quartic regression

A procedure for fitting a quartic function to a set of data.

• Random behavior

Behavior that is determined only by the laws of probability.

• Spiral of Archimedes

The graph of the polar curve.

• Stretch of factor c

A transformation of a graph obtained by multiplying all the x-coordinates (horizontal stretch) by the constant 1/c, or all of the y-coordinates (vertical stretch) of the points by a constant c, c, > 1.

• Symmetric matrix

A matrix A = [aij] with the property aij = aji for all i and j

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