Engineering Board Exam Reviewer · Solid Analytic Geometry · medium
Find the angle between two lines with direction numbers (1,1,0) and (0,1,1), in degrees.
- 60°
- 30°
- 45°
- 90°
Answer
A. 60°
Solution
=(1)(0)+(1)(1)+(0)(1)/ 2 2= 12 =60°.
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