Draw an imaginary triangle from the given data.
\
You know the measures of two sides and their included angle, so use the
\Law of cosines to find the unknown side measure.
\In
, by the law of cosines,
.
Substitute 

(Evaluate powers)
(Multiply)
(Add:
)
(Take the square root of each side)
(Use a calculater)
The distance between Brian and the hoop is 6.7 ft.