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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 32070 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
• Cube root

nth root, where n = 3 (see Principal nth root),

• Explicitly defined sequence

A sequence in which the kth term is given as a function of k.

• Identity function

The function ƒ(x) = x.

• Inductive step

See Mathematical induction.

• Inverse cosecant function

The function y = csc-1 x

• Least-squares line

See Linear regression line.

• 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

• Logistic regression

A procedure for fitting a logistic curve to a set of data

• Main diagonal

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

• Negative angle

Angle generated by clockwise rotation.

• Objective function

See Linear programming problem.

• Ordered set

A set is ordered if it is possible to compare any two elements and say that one element is “less than” or “greater than” the other.

• Ordinary annuity

An annuity in which deposits are made at the same time interest is posted.

• Polar coordinates

The numbers (r, ?) that determine a point’s location in a polar coordinate system. The number r is the directed distance and ? is the directed angle

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

• Real number

Any number that can be written as a decimal.

• Symmetric property of equality

If a = b, then b = a

• Vertices of an ellipse

The points where the ellipse intersects its focal axis.

• yz-plane

The points (0, y, z) in Cartesian space.

• z-coordinate

The directed distance from the xy-plane to a point in space, or the third number in an ordered triple.

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