3 years ago

What does the variable x in the example represent?

Mathematics

2 answers:

slavikrds [6]3 years ago

5 0

Answer:

X represents the unknown value that you are solving for in an equation or expression

Step-by-step explanation:

S_A_V [24]3 years ago

4 0

Answer: it represents what you trying to find

Step-by-step explanation:

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baherus [9]

Answer:

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Step-by-step explanation:

We need to solve the 2 equations to figure out the x-values (intersecting points).

Note: The identity $cos^{2}x=\frac{1}{2}+\frac{1}{2}cos(2x)$

$cos(2x)=cos^{2}(x)-1\\cos(2x)=(\frac{1}{2}+\frac{1}{2}cos(2x))-1\\cos(2x)=\frac{1}{2}cos(2x)-\frac{1}{2}\\\frac{1}{2}cos(2x)=-\frac{1}{2}\\cos(2x)=-1\\2x=cos^{-1}(-1)\\2x=\pi, 3\pi\\x=\frac{\pi}{2}, \frac{3\pi}{2}$

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Fynjy0 [20]

Answer:

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Step-by-step explanation:

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