# TrigonometryRight Triangle Problem

#### Jacob123

##### New member
How would I have to calculate this question for an answer, a friend of mine told me he could get the answer without knowing that the bottom line was 16 meters, I cant seem to find a way that would work, im not sure if im missing something or he is lying.

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#### skeeter

##### Well-known member
MHB Math Helper
I'd also like to know how your friend could determine a numerical value for $d$ just knowing the angle $\theta = 0.19$ with no other information.
If he lets you know how, post back and enlighten me.

Using the angle, $\theta$, value and the 16 meters ...

$\cos{\theta} = \dfrac{16}{d} \implies d = \dfrac{16}{\cos{\theta}}$