MCQ
$\sin 75^\circ = $
- A$\frac{{2 - \sqrt 3 }}{2}$
- ✓$\frac{{\sqrt 3 + 1}}{{2\sqrt 2 }}$
- C$\frac{{\sqrt 3 - 1}}{{ - 2\sqrt 2 }}$
- D$\frac{{\sqrt 3 - 1}}{{2\sqrt 2 }}$
✓
Answer
Correct option: B.
$\frac{{\sqrt 3 + 1}}{{2\sqrt 2 }}$
b
(b) $\sin \,{75^o} = \sin \,\,({90^o} - {15^o}) $
(b) $\sin \,{75^o} = \sin \,\,({90^o} - {15^o}) $
$= \cos \,{15^o} = \cos \,\,({45^o} - {30^o})$
$ = \frac{{\sqrt 3 + 1}}{{2\sqrt 2 }}$.
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