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# Solutions for Chapter 5: TRIGONOMETRIC FUNCTIONS: UNIT CIRCLE APPROACH ## Full solutions for Precalculus: Mathematics for Calculus | 6th Edition

ISBN: 9780840068071 Solutions for Chapter 5: TRIGONOMETRIC FUNCTIONS: UNIT CIRCLE APPROACH

Solutions for Chapter 5
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##### ISBN: 9780840068071

Summary of Chapter 5: TRIGONOMETRIC FUNCTIONS: UNIT CIRCLE APPROACH

This expansive textbook survival guide covers the following chapters and their solutions. Precalculus: Mathematics for Calculus was written by and is associated to the ISBN: 9780840068071. Since 72 problems in chapter 5: TRIGONOMETRIC FUNCTIONS: UNIT CIRCLE APPROACH have been answered, more than 42773 students have viewed full step-by-step solutions from this chapter. Chapter 5: TRIGONOMETRIC FUNCTIONS: UNIT CIRCLE APPROACH includes 72 full step-by-step solutions. This textbook survival guide was created for the textbook: Precalculus: Mathematics for Calculus, edition: 6.

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

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

• Angular speed

Speed of rotation, typically measured in radians or revolutions per unit time

• Annual percentage rate (APR)

The annual interest rate

• Cosecant

The function y = csc x

• Derivative of ƒ at x a

ƒ'(a) = lim x:a ƒ(x) - ƒ(a) x - a provided the limit exists

• Double-angle identity

An identity involving a trigonometric function of 2u

• Higher-degree polynomial function

A polynomial function whose degree is ? 3

• Imaginary part of a complex number

See Complex number.

• Implicitly defined function

A function that is a subset of a relation defined by an equation in x and y.

• Infinite sequence

A function whose domain is the set of all natural numbers.

• Linear regression

A procedure for finding the straight line that is the best fit for the data

• Logarithmic regression

See Natural logarithmic regression

• Mathematical induction

A process for proving that a statement is true for all natural numbers n by showing that it is true for n = 1 (the anchor) and that, if it is true for n = k, then it must be true for n = k + 1 (the inductive step)

• Modulus

See Absolute value of a complex number.

• Polynomial function

A function in which ƒ(x)is a polynomial in x, p. 158.

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

• Richter scale

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

• 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>

• Unit ratio

See Conversion factor.

• xy-plane

The points x, y, 0 in Cartesian space.