Provide solution for RD Sharma Maths Class 12 Chapter 26 Directions Cosines and Direction Ratios Exercise Multiple Choice Question, question 14.
Final Answer: (a) (2,0,0)
Given: Point (2,5,7)
To Find: Foot of perpendicular on x-axis
Solution: As the foot of perpendicular of the point (2,5,7) lie on x-axis, the x-coordinate at the foot is 2, while y and z coordinates on the x axis are always zero. So, the coordinates at foot of perpendicular are (2,0,0)
Therefore, opton (a) (2,0,0) is correct.