Mathematics For Machine Technology
Mathematics For Machine Technology
8th Edition
ISBN: 9781337798310
Author: Peterson, John.
Publisher: Cengage Learning,
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Chapter 58, Problem 23AR
To determine

The measure of angle 1.

The measure of angle 2.

The measure of angle 3.

The measure of angle 4.

The measure of angle 5.

The measure of angle 6.

The measure of angle 7.

The measure of angle 8.

The measure of angle 9.

The measure of angle 10.

Expert Solution & Answer
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Answer to Problem 23AR

The measure of angle 1 is 25°

The measure of angle 2 is 67°.

The measure of angle 3 is 48°.

The measure of angle 4 is 29°.

The measure of angle 5 is 48°.

The measure of angle 6 is 86°.

The measure of angle 7 is 94°.

The measure of angle 8 is 126°.

The measure of angle 9 is 54°.

The measure of angle 10 is 88°.

Explanation of Solution

Given information:

The angle CAD is 38°, angle BEC is 40°, arc AC is 130° and arc CE is =134°.

The given figure is as shown below.

  Mathematics For Machine Technology, Chapter 58, Problem 23AR

        Figure -(1)

Write the expression for angle CAE.

CAE=COE2 ...... (I)

Write the expression for the angle 4.

4+38°=CAE ...... (II)

Write the expression for angle AOE.

AOE=360°(130°+134°)=360°264°=96°

Write the expression for angle ACE.

ACE=AOE2 ...... (III)

Write the expression for the angle sum property of a triangle XYZ.

X+Y+Z=180° ...... (IV)

Here, the first angle of the triangle is X, the second angle of the triangle is Y and the third angle of the triangle is Z

Write the expression for angle EFG.

EFG=180°7 ...... (V)

Write the expression for angle AGH.

AGH=9

Write the expression for angle AHG.

AHG=10

Write the expression for angle OEC.

OEC=180°134°2=23°

Write the expression for angle 2.

OEC+2=90° ...... (VI)

Write the expression for the angle sum property of a line.

θ+φ+α+β+....=180° ...... (VII)

Here, the respective angles on the lines are θ, φ, α, β.

Calculation:

Substitute 134° for COE in Equation (I)

CAE=134°2=67°

Substitute 67° for CAE in Equation (II).

4+38°=67°4=67°38°4=29°

Substitute 96° for AOE and 5 for ACE in Equation (III).

5=96°2=48°

Substitute (4+38°) for X, 5 for Y, (40°+1) for Z, 29° for 4 and 48° for 5, for triangle ACE in Equation (IV).

(4+38°)+5+(40°+1)=180°29°+38°+48°+40°+1=180°31=25°

Substitute 38° for X, 5 for Y, 7 for Z and 48° for 5, for triangle ACF in Equation (IV).

38°+5+7=180°7=180°38°48°7=94°

Substitute 7 for X, 6 for Y, 0° for Z and 94° for 7, for line AFD in Equation (IV).

7+6+0°=180°94°+6=180°6=180°94°6=86°

Substitute 94° for 7 in Equation (V).

EFG=180°94°=86°

Substitute 40° for X, 9 for Y, EFG for Z and 86° for EFG, for triangle EFG in Equation (IV).

EFG+9+40°=180°9=180°40°86°9=54°

Substitute 8 for X, 9 for Y, 0° for Z and 54° for 8, for line BGE in Equation (IV).

8+9+0°=180°8=180°54°8=126°

Substitute 40° for X, 9 for Y, EFG for Z and 86° for EFG, for triangle EFG in Equation (IV).

EFG+9+40°=180°9=180°40°86°9=54°

Substitute 38° for X, 9 for Y, 10 for Z and 54° for 9, for triangle AGH in Equation (IV).

38°+9+10=180°10=180°38°54°10=88°

Substitute 23° for OEC in Equation (VI).

23°+2=90°2=90°23°2=67°

Substitute 1 for θ, 2 for φ, 3 for α, 40° for β, 25° for 1 and 67° for 2 in Equation (VII).

1+2+3+40°=180°3=180°40°25°67°3=48°

Conclusion:

The measure of angle 1 is 25°

The measure of angle 2 is 67°.

The measure of angle 3 is 48°.

The measure of angle 4 is 29°.

The measure of angle 5 is 48°.

The measure of angle 6 is 86°.

The measure of angle 7 is 94°.

The measure of angle 8 is 126°.

The measure of angle 9 is 54°.

The measure of angle 10 is 88°.

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Chapter 58 Solutions

Mathematics For Machine Technology

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