Search any question & find its solution
Question:
Answered & Verified by Expert
What is the sum of the squares of direction cosines of $\begin{array}{ll}x \text { -axis ? } & {}\end{array}$
Options:
Solution:
1188 Upvotes
Verified Answer
The correct answer is:
1
Sum of squares of direction cosines $=(1)^{2}+(0)^{2}+(0)^{2}=1$
Looking for more such questions to practice?
Download the MARKS App - The ultimate prep app for IIT JEE & NEET with chapter-wise PYQs, revision notes, formula sheets, custom tests & much more.