Answer:
(a) ED = 7.78
(b) EF = 5.96
Explanation:
(b)
Let F be the midpoint of CD.
tan 50° = EF/FD
EF = FD × tan 50°
EF = 5 × tan 50°
EF = 5.96
(a)
EF² + FD² = ED²
5.96² + 5² = ED²
ED = 7.78
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