1.

The upper part of a tree broke at a certain height makes an angle of 60 ° with the ground at a distance of 10 m. from its feet. The original height of the tree was

A. 20√3 m.
B. 10√3 m.
C. 10(2+√3) m.
D. 10(2-­√3) m.
Answer» D. 10(2-­√3) m.


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