 4.3.4.3.5: In Exercises 1 8, use the Pythagorean Theorem to find the length of...
 4.3.4.3.6: In Exercises 1 8, use the Pythagorean Theorem to find the length of...
 4.3.4.3.7: In Exercises 1 8, use the Pythagorean Theorem to find the length of...
 4.3.4.3.8: In Exercises 1 8, use the Pythagorean Theorem to find the length of...
 4.3.4.3.9: In Exercises 1 8, use the Pythagorean Theorem to find the length of...
 4.3.4.3.10: In Exercises 1 8, use the Pythagorean Theorem to find the length of...
 4.3.4.3.11: In Exercises 1 8, use the Pythagorean Theorem to find the length of...
 4.3.4.3.12: In Exercises 1 8, use the Pythagorean Theorem to find the length of...
 4.3.4.3.13: In Exercises 9 20, use the given triangles to evaluate each express...
 4.3.4.3.14: In Exercises 9 20, use the given triangles to evaluate each express...
 4.3.4.3.15: In Exercises 9 20, use the given triangles to evaluate each express...
 4.3.4.3.16: In Exercises 9 20, use the given triangles to evaluate each express...
 4.3.4.3.17: In Exercises 9 20, use the given triangles to evaluate each express...
 4.3.4.3.18: In Exercises 9 20, use the given triangles to evaluate each express...
 4.3.4.3.19: In Exercises 9 20, use the given triangles to evaluate each express...
 4.3.4.3.20: In Exercises 9 20, use the given triangles to evaluate each express...
 4.3.4.3.21: In Exercises 9 20, use the given triangles to evaluate each express...
 4.3.4.3.22: In Exercises 9 20, use the given triangles to evaluate each express...
 4.3.4.3.23: In Exercises 9 20, use the given triangles to evaluate each express...
 4.3.4.3.24: In Exercises 9 20, use the given triangles to evaluate each express...
 4.3.4.3.25: In Exercises 21 28, find a cofunction with the same value as the gi...
 4.3.4.3.26: In Exercises 21 28, find a cofunction with the same value as the gi...
 4.3.4.3.27: In Exercises 21 28, find a cofunction with the same value as the gi...
 4.3.4.3.28: In Exercises 21 28, find a cofunction with the same value as the gi...
 4.3.4.3.29: In Exercises 21 28, find a cofunction with the same value as the gi...
 4.3.4.3.30: In Exercises 21 28, find a cofunction with the same value as the gi...
 4.3.4.3.31: In Exercises 21 28, find a cofunction with the same value as the gi...
 4.3.4.3.32: In Exercises 21 28, find a cofunction with the same value as the gi...
 4.3.4.3.33: In Exercises 29 34, find the measure of the side of the right trian...
 4.3.4.3.34: In Exercises 29 34, find the measure of the side of the right trian...
 4.3.4.3.35: In Exercises 29 34, find the measure of the side of the right trian...
 4.3.4.3.36: In Exercises 29 34, find the measure of the side of the right trian...
 4.3.4.3.37: In Exercises 29 34, find the measure of the side of the right trian...
 4.3.4.3.38: In Exercises 29 34, find the measure of the side of the right trian...
 4.3.4.3.39: In Exercises 35 38, use a calculator to find the value of the acute...
 4.3.4.3.40: In Exercises 35 38, use a calculator to find the value of the acute...
 4.3.4.3.41: In Exercises 35 38, use a calculator to find the value of the acute...
 4.3.4.3.42: In Exercises 35 38, use a calculator to find the value of the acute...
 4.3.4.3.43: In Exercises 39 42, use a calculator to find the value of the acute...
 4.3.4.3.44: In Exercises 39 42, use a calculator to find the value of the acute...
 4.3.4.3.45: In Exercises 39 42, use a calculator to find the value of the acute...
 4.3.4.3.46: In Exercises 39 42, use a calculator to find the value of the acute...
 4.3.4.3.47: In Exercises 43 48, find the exact value of each expression. Do not...
 4.3.4.3.48: In Exercises 43 48, find the exact value of each expression. Do not...
 4.3.4.3.49: In Exercises 43 48, find the exact value of each expression. Do not...
 4.3.4.3.50: In Exercises 43 48, find the exact value of each expression. Do not...
 4.3.4.3.51: In Exercises 43 48, find the exact value of each expression. Do not...
 4.3.4.3.52: In Exercises 43 48, find the exact value of each expression. Do not...
 4.3.4.3.53: In Exercises 49 50, express each exact value as a single fraction. ...
 4.3.4.3.54: In Exercises 49 50, express each exact value as a single fraction. ...
 4.3.4.3.55: If is an acute angle and find tana p2cot u =  ub.
 4.3.4.3.56: If is an acute angle and find csca p2cos u =  ub.
 4.3.4.3.57: To find the distance across a lake, a surveyor took the measurement...
 4.3.4.3.58: At a certain time of day, the angle of elevation of the sun is 40. ...
 4.3.4.3.59: A tower that is 125 feet tall casts a shadow 172 feet long. Find th...
 4.3.4.3.60: The Washington Monument is 555 feet high. If you stand one quarter ...
 4.3.4.3.61: A plane rises from takeoff and flies at an angle of 10 with the ho...
 4.3.4.3.62: A road is inclined at an angle of 5. After driving 5000 feet along ...
 4.3.4.3.63: A telephone pole is 60 feet tall. A guy wire 75 feet long is attach...
 4.3.4.3.64: A telephone pole is 55 feet tall. A guy wire 80 feet long is attach...
 4.3.4.3.65: If you are given the lengths of the sides of a right triangle, desc...
 4.3.4.3.66: Describe one similarity and one difference between the definitions ...
 4.3.4.3.67: Describe the triangle used to find the trigonometric functions of 45
 4.3.4.3.68: Describe the triangle used to find the trigonometric functions of 3...
 4.3.4.3.69: Describe a relationship among trigonometric functions that is based...
 4.3.4.3.70: Describe what is meant by an angle of elevation and an angle of dep...
 4.3.4.3.71: Stonehenge, the famous stone circle in England, was built between 2...
 4.3.4.3.72: Use a calculator in the radian mode to fill in the values in the fo...
 4.3.4.3.73: Use a calculator in the radian mode to fill in the values in the fo...
 4.3.4.3.74: For a given angle I found a slight increase in as the size of the t...
 4.3.4.3.75: Although I can use an isosceles right triangle to determine the exa...
 4.3.4.3.76: The sine and cosine are cofunctions and reciprocals of each other
 4.3.4.3.77: Standing under this arch, I can determine its height by measuring t...
 4.3.4.3.78: tan 45 tan 15 = tan 3
 4.3.4.3.79: tan2 15  sec2 15 = 1
 4.3.4.3.80: sin 45 + cos 45 = 1
 4.3.4.3.81: tan2 sin 45 + cos 45 = 1 5 = tan 25
 4.3.4.3.82: Explain why the sine or cosine of an acute angle cannot be greater ...
 4.3.4.3.83: Describe what happens to the tangent of an acute angle as the angle...
 4.3.4.3.84: From the top of a 250foot lighthouse, a plane is sighted overhead ...
 4.3.4.3.85: a. Write a ratio that expresses for the right triangle in Figure (a...
 4.3.4.3.86: a. Write a ratio that expresses for the right triangle in Figure (a...
 4.3.4.3.87: Find the positive angle formed by the terminal side of and the a. b...
Solutions for Chapter 4.3: Right Triangle Trigonometry
Full solutions for Precalculus  4th Edition
ISBN: 9780321559845
Solutions for Chapter 4.3: Right Triangle Trigonometry
Get Full SolutionsThis expansive textbook survival guide covers the following chapters and their solutions. Precalculus was written by and is associated to the ISBN: 9780321559845. Since 83 problems in chapter 4.3: Right Triangle Trigonometry have been answered, more than 70654 students have viewed full stepbystep solutions from this chapter. Chapter 4.3: Right Triangle Trigonometry includes 83 full stepbystep solutions. This textbook survival guide was created for the textbook: Precalculus, edition: 4.

Arithmetic sequence
A sequence {an} in which an = an1 + d for every integer n ? 2 . The number d is the common difference.

Binomial coefficients
The numbers in Pascal’s triangle: nCr = anrb = n!r!1n  r2!

Boxplot (or boxandwhisker plot)
A graph that displays a fivenumber summary

Common ratio
See Geometric sequence.

Convenience sample
A sample that sacrifices randomness for convenience

DMS measure
The measure of an angle in degrees, minutes, and seconds

Equivalent arrows
Arrows that have the same magnitude and direction.

Frequency distribution
See Frequency table.

Invertible linear system
A system of n linear equations in n variables whose coefficient matrix has a nonzero determinant.

Limit at infinity
limx: qƒ1x2 = L means that ƒ1x2 gets arbitrarily close to L as x gets arbitrarily large; lim x: q ƒ1x2 means that gets arbitrarily close to L as gets arbitrarily large

Numerical model
A model determined by analyzing numbers or data in order to gain insight into a phenomenon, p. 64.

Quadratic equation in x
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.

Secant
The function y = sec x.

Semimajor axis
The distance from the center to a vertex of an ellipse.

Standard form of a polynomial function
ƒ(x) = an x n + an1x n1 + Á + a1x + a0

Standard form: equation of a circle
(x  h)2 + (y  k2) = r 2

Sum of a finite arithmetic series
Sn = na a1 + a2 2 b = n 2 32a1 + 1n  12d4,

Unit vector
Vector of length 1.

Venn diagram
A visualization of the relationships among events within a sample space.