MCQ
$\sin \left[ {2{{\sin }^{ - 1}}\left( {\cos A} \right)} \right]$ નું મૂલ્ય .......... છે.
- A$sin A$
- B$cos A$
- C$cos 2A$
- ✓$sin 2A$
$\sin \left[ {2{{\sin }^{ - 1}}\left( {\cos A} \right)} \right] = \sin \left[ {2{{\sin }^{ - 1}}\left( {\sin \left( {\frac{\pi }{2} - A} \right)} \right)} \right]$
$ = \sin \left[ {2\left( {\frac{\pi }{2} - A} \right)} \right]$
$ = \sin \left( {\pi - 2A} \right)$
$ = \sin 2A$
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
કારણ $(R) : \,{\left( {\vec x \,\, + \;\,\vec y } \right)^2}\, = \,\,|\vec x {|^2}\,\, + \,\,|\vec y {|^2}\,\, + \;\,2\,\,\left( {\vec x .\,\,\vec y } \right)$