MCQOPTIONS
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| 1. |
The range of \[y=(co{{t}^{-1}}x)(co{{t}^{-1}}(-x))\] is |
| A. | \[(\left. 0,\frac{{{\pi }^{2}}}{4} \right]\] |
| B. | \[(0,\pi )\] |
| C. | \[(0,2\pi ]\] |
| D. | \[(0,1]\] |
| Answer» C. \[(0,2\pi ]\] | |