Class 11MathematicsTrigonometrical Ratios, Functions and IdentitiesFundamental trigonometrical ratios and functions, Trigonometrical ratio of allied angles
EasyWhich of the following statements is incorrect?
- A$\sin \theta = -\frac{1}{5}$
- B$\cos \theta = 1$
- C$\sec \theta = \frac{1}{2}$
- D$\tan \theta = 20$
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