Class 11MathematicsTrigonometrical Ratios, Functions and IdentitiesFundamental trigonometrical ratios and functions, Trigonometrical ratio of allied angles
EasyIf $\sin (\alpha - \beta ) = \frac{1}{2}$ and $\cos (\alpha + \beta ) = \frac{1}{2},$ where $\alpha$ and $\beta$ are positive acute angles,then:
- A$\alpha = 45^\circ, \beta = 15^\circ$
- B$\alpha = 15^\circ, \beta = 45^\circ$
- C$\alpha = 60^\circ, \beta = 15^\circ$
- DNone of these
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