Class 11MathematicsTrigonometric FunctionsFundamental trigonometrical ratios and functions, Trigonometrical ratio of allied angles
EasyIf $\operatorname{cosech} x = \frac{4}{5}$,then $\sinh x = $
- A$\frac{4}{5}$
- B$\frac{5}{4}$
- C$\frac{2}{3}$
- D$\frac{2}{5}$
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MediumWBJEE 2010
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