Cos(2x) = cos^2(x) - sin^2(x) - cos(x)
but sin^2(x) = 1 - cos^2(x)
cos(2x) - cos(x) = cos^2(x) - (1 - cos^2(x) ) - cos(x)
cos(2x) - cos(x) = cos^2(x) - 1 + cos^2(x) - cos(x)
cos(2x) - cos(x) = 2cos^2(x) - 1 - cos(x)
cos(2x) - cos(x) = (2cos(x) + 1)(cos(x) - 1)
I think this is what you have asked for.
4 hours because noon is 12. 8-12 is 4
Answer:
$74.80
Step-by-step explanation:
10% = 8.8
5% = 4.4
8.8 + 4.4 = 13.2
88 - 13.2 =$74.80
Answer:
There are four terms of the expression
.
Step-by-step explanation:
The given expression is
.
The first term of this expression is
.
The second term of this expression is
.
The third term of the expression is
.
The fourth term of the expression is
.
Therefore, there are four terms in the given expression.
Answer:
C. It is vertically stretched by a factor of 200 and shifted 10 units up.
Step-by-step explanation:
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