You add 70 + 50 then you multiply it by 7.5 and you get, 900 gallons.
Answer:
c=xy/g happy to help ya:)
Step-by-step explanation:
Answer negative 9 is the answer
Step-by-step explanation:
Given:
There are given that the cos function:

Explanation:
To find the value, first, we need to use the half-angle formula:
So,
From the half-angle formula:

Then,
Since 105 degrees is the 2nd quadrant so cosine is negative
Then,
By the formula:

Then,
Put the value of cos210 degrees into the above function:
So,

Final answer:
Hence, the value of the cos(105) is shown below: