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# Tutor profile: Tori V.

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Tori V.
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## Questions

### Subject:Trigonometry

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Question:

If the tan(x)= 3/4 in a basic right triangle with x being the bottom right angle, the what does sin(x)= ?

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Tori V.

If the tan(x)= 3/4 that means the hypotenuse is equivalent to 5, making the sin(x)= 3/5.

### Subject:Psychology

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Question:

What is the Phi Phenomenon and an example of it?

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Tori V.

The Phi Phenomenon is the illusion that movement occurs when two or more adjacent lights begin blinking in succession of one another. An example would be the lights on a loading symbol on either a phone or other device: the loading symbols are actually moving but rather are cycling through a pattern of being lit up or dark in order to give it the effect that it is in fact moving.

### Subject:Calculus

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Question:

Find the first and second derivative of the following function: f(x)= x^3-4x^2-16x+87

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Tori V.

f'(x)= 3x^2-8x-16 f''(x)= 6x-8

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