Double angle identity for cosine:

By the Pythagorean theorem, if

, it follows that

:

where we take the positive root because

, and

is non-negative throughout this domain.
So we have
Answer:
b. 16.000
Step-by-step explanation:


=
=16.000
Answer:
That means 30% = 24 which means 60% = 48
Step-by-step explanation:
is this what you needed?
30 percent off means that we can just reduce 30 percent from .79 to get .55.
divide 10.00 by .55 to get the answer of <span>18.18. The max yogurts Nicola can buy is 18.</span>
Answer: 5 in the 0-4 range, 0 in the 5-9 range, 3 in the 10-14 range, 4 in the 15-19 range, and 3 in the 20-22 range.
Explanation: it’s a histogram, which is similar to a bar graph, but its data points lie within ranges with values.