Class 11MathematicsTrigonometric FunctionsFundamental trigonometrical ratios and functions, Trigonometrical ratio of allied angles
Medium$\frac{1-2(\cos 60^{\circ}-\cos 80^{\circ})}{2 \sin 10^{\circ}} = \dots$
- A$2$
- B$1$
- C$\frac{1}{2}$
- D$\frac{3}{2}$
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