## SAMPLE VIDEOS

## Biochemistry

Carbohydrates:

This is a brief introduction to carbohydrates. Carbohydrates have great biological importance such as providing energy and forming structures of the cell. This video explains the terminology used to define carbohydrates and goes over the structure of glucose.

## General Chemistry

Stoichiometry:

This video goes over the steps required to do a stoichiometry problem. The question addressed in this video is: 6.50 grams of aluminum react with excess oxygen. How many grams of aluminum oxide are formed?

## SAMPLE CORRECTIONS

## Algebra: Inverse Functions

An inverse function is the reverse of another function. To get the inverse function, follow these steps:

1. Replace the f(x) or g(x) with y

**a lot of students get confused about the difference between f(x) and y; they essentially mean the same thing: the value of y/f(x) is dependent on x

2. Switch your x and y

3. Isolate or solve for y

**The notes above are some problems done with a student during online geometry tutoring. Please zoom out for best quality.

## Geometry: Big Ideas Math Book Ch 9.5

Most of my students dread learning trigonometry because the terminology seems convoluted. However, I believe that with practice, the unit circle, as well as the rules of sine, cosine, and tangent, can be easily broken down using the following steps:

1. Draw out the triangle

2. Remember "SOH CAH TOA"

*** S=sine, C=cosine, T=tangent, O=opposite side, A=adjacent side and H=hypotenuse

3. Set up the equation

**The notes above are some problems done with a student during online geometry tutoring. Please zoom out for best quality.

## Geometry: Big Ideas Math Book Ch 9.6

Chapter 9.6 focuses on solving right triangles using the methods of sine, cosine, tangent. In addition, you can use Pythagorean theorem to find the lengths of the sides and inverse sine, cosine or tangent to find the angles:

1. Draw out the triangle

2. If the triangle is only missing one side length, use Pythagorean theorem. If it is missing more than one side, use sine, cosine or tangent.

3. Remember "SOH CAH TOA"

***S=sine, C=cosine, T=tangent, O=opposite side, A=adjacent side and H=hypotenuse

4. Set up your equation

5. To find the missing angle, set up the problem and then use inverse sine to solve. Inverse sine is another way of saying 1/sine so multiplying sine by 1/sine will just give you 1.

**The notes above are some problems done with a student during online geometry tutoring. Please zoom out for best quality.