The cosine of angle between lines with DRs (1,0,0) and (1,1,0) is:
The cosine of angle between lines with DRs (1,0,0) and (1,1,0) is:
- A. 1/√2
- B. √2
- C. 1/2
- D. 0
Answer: A) 1/√2
Explanation: Cosθ=1/(1×√2)=1/√2.
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