$\"\"$

\

The inclination angle is $\"\"$ .

\

The elevation change is $\"\"$ .

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Find the length of the trail.

\

Consider length of the trail is $\"\"$ .

\

Draw the diagram for the situation.

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$\"\"$ \ \

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Observe the figure:

\

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

$\"\"$ .

\

Therefore, the length of the trail is $\"\"$ .

\

$\"\"$

\

The length of the trail is $\"\"$ .