MCQ
$\sin^2(5^\circ ) + \sin^2(10^\circ ) + \sin^2(15^\circ ) + ... + \sin^2(85^\circ ) + \sin^2(90^\circ ) =...........$
- A$\frac{9}{2}$
- B$\frac{39}{2}$
- ✓$\frac{19}{2}$
- D$\frac{49}{2}$
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