I need help with number 9: h, i, k and l
1 answer:
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Answer:
<em>Answer: C</em>
Step-by-step explanation:
<u>The Cosine Function</u>
The graph of a cosine function is a sinusoid that starts at its maximum value of 1 at x=0 and takes x=2π radians to complete a full cycle. The function of the parent cosine function is:
Both the amplitude A and the angular frequency w of a cosine can be modeled by the function
The graph of the cosine function shown in the figure has an amplitude of A=3 and it completes a full cycle at x=π/2, thus:
Thus:
Therefore, the equation of the sinusoid is:
Answer: C
For number two, answer is: r=2
A= π•r^2
C=2 πr
2r=r^2
If r=2 then,
2•2=2^2
4=4
Answer for number three is: A=5981m^2
Explanation for number 3 in photo below.
Good luck.
A= π•r^2
C=2 πr
2r=r^2
If r=2 then,
2•2=2^2
4=4
Answer for number three is: A=5981m^2
Explanation for number 3 in photo below.
Good luck.