If cos 55° and sin 55° = 0.8 each then the answer of cos 125° + 5 sin 55° is

If cos 55° and sin 55° = 0.8 each then the answer of cos 125° + 5

1.	If cos 55° and sin 55° = 0.8 each then the answer of cos 125° + 5 sin 55° is
A.	2.4
B.	2.8
C.	3.2
D.	0.8
Answer» B. 2.8