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1. |
Consider a circle of radius R. what is the length of a chord which subtends an angle \[\theta \] at the centre? |
A. | \[2R\sin \left( \frac{\theta }{2} \right)\] |
B. | \[2R\sin \theta \] |
C. | \[2R\tan \left( \frac{\theta }{2} \right)\] |
D. | \[2R\tan \theta \] |
Answer» B. \[2R\sin \theta \] | |