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absar hashmi

· started a discussion

· 1 Months ago

na (Question: 246827.0 )

=sin(Pi + Y)*

Question:
If α + β - \(\gamma\) = \(\pi\), then sin2 α+ sin2 β – sin2 \(\gamma\) = ?
Options:
A) 2 sin \(\alpha\) sin \(\beta\) cos \(\gamma\) 
B) 2 cos \(\alpha\) cos \(\beta\) cos \(\gamma\) 
C) 2 sin \(\alpha\) sin \(\beta\) sin \(\gamma\) 
D) 2 cos \(\alpha\) cos \(\beta\) sin \(\gamma\) 
Solution:

Ans: (a)  


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