
Concept explainers
The angle

Answer to Problem 47A
The angle is
Explanation of Solution
Given:
Angle shown in below figure:
Calculation:
Apply cos rule in triangle ABC as follows:
So, the side
Apply sine rule intriangle ABC as follows:
Angle
Angle
Apply cos rule in triangle
Apply sine rule intriangle
Angle
Angle
Apply sine rule intriangle
Angle
Angle
Thus, the angle is
Conclusion:
The angle is
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Chapter 70 Solutions
Mathematics for Machine Technology
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