To find $x$, I could use trigonometry if I know the angle that's adjacent to 16 and opposite to $x$.
Is the angle for θ in the bigger triangle the same for the smaller triangle?
To find $x$, I could use trigonometry if I know the angle that's adjacent to 16 and opposite to $x$.
Is the angle for θ in the bigger triangle the same for the smaller triangle?
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Note that the two triangle are similar by AA test. Please read about similarity here.
Hence,
$$ \frac{x}{22}=\frac{16}{38} $$
Thus,