# MandysNotes

## Mandy

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### sin(a+b) = (cos a)(sin b) + (sin a)(cos b)

27 January 2010

{module [79]}

Disclaimer: I did not create nor do I own these videos. I have simply embedded them, courtesy of YouTube.

### Example Problem: Pythagorean Theorem

27 January 2010

Disclaimer: I did not create nor do I own these videos. I have simply embedded them, courtesy of YouTube.

This video solves a distance problem concerning ships.  The solution process is based on The Pythagorean Theorem.

### What is Implicit Differentiation?

27 January 2010

Disclaimer: I did not create nor do I own these videos. I have simply embedded them, courtesy of YouTube.

### Related Rates: Using Implicit Differentiation

27 January 2010

{module [79]}

Disclaimer: I did not create nor do I own these videos. I have simply embedded them, courtesy of YouTube.

The problem presented in this video is an example solving by implicit differentiation:

At noon, Ship A is 100km west of Ship B.  Ship A is sailing south at 35 km/h and Ship B is sailing north at 25km/h.  How fast is the distance between the ships changing at 4:00PM?

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