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प्रश्न
What are the direction cosines of Z-axis?
उत्तर
The z−axis makes angles 90°, 90° and 0° with x, y and z axes, respectively. Therefore, the direction cosines of z−axis are cos 90°, cos 90°, cos 0°, i.e. 0, 0, 1.
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संबंधित प्रश्न
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