Answer:
85.5
Step-by-step explanation:
It is already in identity.
cos (x - y) - cos (x + y) = 2 sin(x) sin (y)
Answer:
d. The common ratio is 1.1
Step-by-step explanation:
To see if the data has a common ratio or common difference, we have to see if the division between them is equal(common ratio), or if the difference between them is equal(common difference).
In this case, since , it has a common ratio.
To find it, we divide consecutive terms. For example:
So the correct answer is:
d. The common ratio is 1.1