So there is an identity we'll need to use to solve this:
cos(x+y) = cosxcosy - sinxsiny
replace the numerator with the right hand side of that identity and we get:
(cosxcosy - sinxsiny)/cosxsiny
Separate the numerator into 2 fractions and we get:
cosxcosycosxsiny- sinxsiny/cosxsiny
the cosx's cancel on the left fraction, the siny's cancel on the right fraction and we're left with:
cosy/siny - sinx/cosx
which simplifies to:
coty - tanx
Answer:
To multiply fractions, all you have to do is multiply the numerators and denominators and simplify the result. To divide fractions, you simply have to flip the numerator and denominator of one of the fractions, multiply the result by the other fraction, and simplify.
Step-by-step explanation:
Answer:
51
Step-by-step explanation:
hope that helps
Answer:
8.04672
or 8
Step-by-step explanation:
Answer:
Total number of donor who will give first $ 100 = 100 people
Step-by-step explanation:
Given that:
Total percentage of people who donate when contact by phone 20%
Percentage of donating people who will give $100 or more = 5% = 0.05
Total number of donor who will give first $ 100 can be calculated as
calculate the percentage of donor who will give first $ 100
so, total number of the donor who will give first $ 100 = 100 people
