MCQ
જો $\sin y = x\sin (a + y),$ તો ${{dy} \over {dx}} = $
- A${{{\sin }^2}(a + y)}$
- B${{{{\sin }^2}(a + y)} \over {\sin (a + 2y)}}$
- ✓${{{{\sin }^2}(a + y)} \over {\sin a}}$
- D${{{{\sin }^2}(a + y)} \over {\cos a}}$
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