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IrinaVladis [17]
3 years ago
12

when do you use cos and sin in situations like these? is horizontal always cos and vertical always sin?

Physics
1 answer:
Andreas93 [3]3 years ago
8 0

Answer:

yes

Explanation:

this is simple

the horizontal line is adjacent

the vertical line is opposite

recall that cos x=adj/hyp

adj=hyp(cos x)

while opp=hyp(sin x)

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Which of the following would illustrate a quadratic relation between the dependent and independent variables when graphed?
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Answer: option A. a graph of the area of a circle vs. its radius r (A = πr²).



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The function is y =  ax² + bx + c, where x is the independent variable and y is the dependent variable.



As stated in the question, the area of a circle is given by A = πr².



In this case, A is the dependent variable and r is the independent variable.



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The equation a = 1/b  is an inverse relation, not a quadratic relation.



The relation of distance vs. time for a car moving at constant speed is a linear relation of the kind v = u + st.



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Answer:

\nu =1166\times 10^{20}Hz  

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