(a)
Sketch the rectangular solid for the given views.

Explanation of Solution
The below figure represents the sketch of the sketch of a pyramid formed on surface of the extended sides of the rectangular solid surface block and identified angle.
Figure-(1)
(b)
The angle of rotation

Answer to Problem 12A
The angle of rotation
Explanation of Solution
The below figure represent the sketch of the sketch of a pyramid formed on surface of the extended sides of the rectangular solid surface block and identified angle.
Figure-(1)
Here the side
Consider, the angle
Write the expression for the angle
Here, the length of the common side
Write the expression of the angle
Here, the length of the side
Consider, the triangle
Write the expression of the angle
Consider, the triangle
Write the expression of the rotation angle.
Calculation:
Substitute
Substitute
Substitute
Substitute
Conclusion:
The angle of rotation
(c)
The angle of tilt

Answer to Problem 12A
The angle of tilt
Explanation of Solution
Write the expression of angle
Consider, the triangle
Write the expression of tilt angle
Calculation:
Substitute
Substitute
Conclusion:
The angle of tilt
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Chapter 77 Solutions
EBK MATHEMATICS FOR MACHINE TECHNOLOGY
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