Fermi
·
Concept Library
·
Courses
·
Books
·
Problems
·
Simulations
·
Math Wiki
·
High School
Fermi
›
Problems
Mathematics
Mathematics
Problem
Write the direction ratios of the vector
r
=
i
^
−
j
^
+
2
k
^
\mathbf{r} = \hat{i} - \hat{j} + 2\hat{k}
r
=
i
^
−
j
^
+
2
k
^
and hence calculate its direction cosines.
Browse the problem library