If a unit vector is represented by $0.5\hat i + 0.8\hat j + c\hat k$, then the value of ‘$c$’ is
If a unit vector is represented by $0.5\hat i + 0.8\hat j + c\hat k$, then the value of ‘$c$’ is
$1$
$\sqrt {0.11} $
$\sqrt {0.01} $
$\sqrt {0.39} $
If a unit vector is represented by $0.5\hat i + 0.8\hat j + c\hat k$, then the value of ‘$c$’ is
Magnitude of unit vector $= 1$
$⇒$ $\sqrt {{{(0.5)}^2} + {{(0.8)}^2} + {c^2}} = 1$
By solving we get $c = \sqrt {0.11} $
Other Language