Answer
$(a)\space 15.8\space m/s$
$(b)\space 6.37\space m/s$
Work Step by Step
Please see the attached image first.
Let's take the Ostrich's velocity vector as $V$ and the components as $V_{W},V_{N}$
(a) So we can write,
$V_{N}=Vsin\theta$ ; Let's plug known values into this equation.
$V_{N}=17\space m/s\times sin68^{\circ}=15.8\space m/s$
(b) Similarly,
$V_{W}=Vcos\theta$ ; Let's plug known values into this equation.
$V_{W}=17\space m/s\times cos68^{\circ}=6.37\space m/s$
