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1. |
If \[\sin x+\text{cosec}\,x=2,\] then \[4\sin A\,\,\sin B\,\,\sin C\] is equal to [UPSEAT 2002] |
A. | 2 |
B. | \[{{2}^{n}}\] |
C. | \[{{2}^{n-1}}\] |
D. | \[{{2}^{n-2}}\] |
Answer» B. \[{{2}^{n}}\] | |