MCQOPTIONS
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| 1. |
The value of \[\mathbf{tan}\,\mathbf{10}{}^\circ .\mathbf{tan}\text{ }\mathbf{20}{}^\circ .\mathbf{tan}\,\mathbf{30}{}^\circ .\mathbf{tan}\,\mathbf{45}{}^\circ .\]\[\mathbf{tan}\,\mathbf{60}{}^\circ .\mathbf{tan}\,\mathbf{70}{}^\circ .\mathbf{tan}\,\mathbf{80}{}^\circ \]is: |
| A. | 0 |
| B. | \[-\]1 |
| C. | 1 |
| D. | 2 |
| E. | None of these |
| Answer» D. 2 | |