11th Class
Mathematics
Sample Paper
Maths Olympiad Model Paper-2
question_answer
If \[\sin \alpha +\sin \beta +\sin \gamma =0=\cos \alpha +\cos \beta +\cos \gamma ,\] then the value of \[{{\sin }^{2}}\alpha +{{\sin }^{2}}\beta +{{\sin }^{2}}\gamma \] is