# Tutor profile: Joanna M.

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Joanna M.

high school math teacher intern

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## Questions

### Subject: Pre-Calculus

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Question:

Using the Unit circle find the value of the trigonometric functions at the radian degree measure of 60 degrees

Inactive

Joanna M.

Answer:

The value of sin(60)=sqrt(3)/2, cos(60)=1/2, tan(60)=sqrt(3)

### Subject: Geometry

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Question:

What is the formula to find a midpoint of a segment? And given the endpoints of the line segment PQ as P(1,5) and Q(7,2), what is the midpoint of the line segment PQ?

Inactive

Joanna M.

Answer:

The formula for the midpoint of a segment is M=(((x_1+x_2)/2),((y_1+y_2)/2). Now using this formula we plug in the points P and Q and find the midpoint. M=((1+5)/2,(5+2)/2). M=(3,3.5)

### Subject: Calculus

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Question:

Take the derivative of f(x)=3(x^2)+2xe^x using the derivative rules.

Inactive

Joanna M.

Answer:

The derivative of f(x)=3(x^2)+2xe^x is: f'(x)=6x+2x(e^x)+2(e^x) This was obtained using the product rule.

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