Sin(2a-p)+2cos(a+3p/2)*sin(a-3p/2) 1)0 2)2sin2a 3)1 4)cosa 5)sina

Question

Sin(2a-p)+2cos(a+3p/2)*sin(a-3p/2)
1)0
2)2sin2a
3)1
4)cosa
5)sina

Answer 1

-sin2a+2cosa*sina=-sin2a+sin2a=0
1) 0