is there more?to this question
Answer:
okay
Step-by-step explanation:
complementary angles are angles that add up to 90 degrees
so what you would do is take each number that you have and subtract it from 90
In the first one you would
1. take 90-80
2. you get your answer of 10!
i hope this helps :)
Do you know your trig ratios?
Answer:

Step-by-step explanation:
We need to add the two terms.

Solving,
Combine the like terms and adding those terms

So, the answer is:

Answer:
$282.50
Step-by-step explanation:
He will be charged $7.50 for 3 months, which is a total of 7.5 * 3 = $22.50.
Subtract this from the amount in his account to find the amount of money he has at the end of the three months:
305 - 22.5 = 282.5
The answer is therefore $282.50.