Answer
$17.5^{\circ}$
Work Step by Step
We know that
$sin\theta=\frac{height}{length}$
We plug in the known values to obtain:
$sin\theta=(\frac{3.00}{10.0})$
$\implies \theta=sin^{-1}(\frac{3.00}{10.0})$
$\theta=17.5^{\circ}$
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