A) 0
B) 1
C) 2
D) 3
Correct Answer: C
Solution :
\[{{\sin }^{2}}\alpha +{{\sin }^{2}}\beta +\sin \gamma \] \[=1-{{\cos }^{2}}\alpha +1-{{\cos }^{2}}\beta +1-{{\cos }^{2}}\gamma \] \[=3-({{\cos }^{2}}\alpha +{{\cos }^{2}}\beta +{{\cos }^{2}}\gamma )\]\[=3-1=2\]You need to login to perform this action.
You will be redirected in
3 sec