What is the cost of the book?
Answer:
cos(25)
Step-by-step explanation:
cosAcosB + sinAsinB = cos(A-B)
cos(20)cos(45) + sin(20)sin(45)
= cos(20-45) = cos(-25)
= cos(25) or 0.906
Answer:
F(-9)= -9 - 2
F(-9) = -11
Step-by-step explanation:
Plug in -9 for x and solve :^)
Answer:
6
11
Step-by-step explanation: