Answer:
The value of cos Ф is ± 
Step-by-step explanation:
There are important rules for sin Ф and cos Ф
∵ sin Ф = 
∴ sin²Ф = 
∴ sin²Ф = 
→ By using the third rule above
∵ cos²Ф = 1 - sin²Ф
∴ cos²Ф = 1 - 
∴ cos²Ф = 
→ Take square root for both sides
∴ cos Ф = ± 
∴ The value of cos Ф is ± 
Percent. Hope this helps!
Answer:
x = 48
Step-by-step explanation:

Answer:
40:16, 16:40, 40/16, 16/40
-4 is less than -5 even though they are both on the same side of the number line. -4 is closer to zero.