Answer:
Step-by-step explanation:
Given
Required
Write the equivalent cosine function
The general formula is:
Where
Substitute 
for amplitude in
Substitute 3 for period in
<em>Multiply both sides by b</em>
<em>Divide through by 3</em>
Hence;
becomes
35%
7/20
Multiply both sides by 5.
35/100
35%
A=#nickels, b=#quarters
5a + 25b = 410 total value
5(a + 5b) = 410
a + 5b = 82
a + b = 30 total no. of coins
subtracting . . . 4b = 52
thus b = 13 and a = 17
13 quarters and 17 nickels = 13*25 + 17*5 = 410 = $4.10
Answer:
cos A = 6/10
Step-by-step explanation:
That'd be cos A. The cosine function is defined as the ratio
adjacent side
------------------------
hypotenuse
and here that ratio is cos A = 6/10.
