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1. |
The two banks of a canal are straight and parallel. A, B, C are three persons of whom A stands on one bank and B and C on the opposite banks. B finds the angle ABC is 30 , while C finds that the angle ACB 60 . If B and C are 100 metres apart, the breadth of the canal is |
A. | 20 |
B. | metres |
C. | 25 |
D. | metres |
Answer» D. metres | |