Answer:
C. x < 5
Step-by-step explanation:
12x < 60
x < 5
Answer:
see explanation
Step-by-step explanation:
Note that cos315° = cos45° and sin315° = - sin45° and
cos45° = sin45° =
= 
Hence
12(cos315° + isin315°)
= 12(cos45° - isin45°)
= 12(
- i
)
= 6
- 6i 
The answer is 340, not super good at math so dont know what scientific notation is but there you go