Professor Lewis' Sine Shrine

Final call for last minute questions! I have time today to answer a few of the some you might have. Ask them right here.

- Bijan

Here is an awesome video of a guy demonstrating how to find the height of a tree in the way that Professor Lewis was talking about in class.

Tree trigonometry Markus Eichhorn shows off a clever trick for estimating the height of trees! Markus is a tree expert and lecturer in ecology at the University of Nottingham. More about him and Nottingham scientists at http://www.test-tube.org.uk/

Although you will need to USE a ton of formulas on the tests, it's usually NOT a good idea to remember every single one. As one math teacher says: "That way lies disaster." The BEST strategy is to memorize only a few formulas and then figure out the others when you need them. This website is about helping you do just that.

Trig without Tears: Contents How to understand and remember trig identities (Stan Brown)

Hey!! There is SI tonight from 7-10 in Room 1211. We will go over almost everything that will be on the test. If you come, then you'll have the rest of the week to practice the exam's material. There won't be another session until Monday of next week, which is very late! Try me out if you can!

See you,
Bijan

You can get ahead by studying the positions of the angles around the circle on page 22 of your textbook. Getting familiar with the arrangement of the angle measures now will save you some headache when you reach Section 3.3.

- Bijan

Memorize the two special triangles: the 30-60-90 and 45-45-90 ones. You will need them all semester. Here are some facts that can help you in your memorization.

• Both triangles have a square-root number (an irrational number).
• Both triangles have the number 2 somewhere on their hypotenuses.
• Each triangle has at least one number "1" somewhere on it.

Additional tricks can be found on the "Notes" tab.

- Bijan

Welcome to the Sine Shrine! If you don't know what the word "sine" means, then you will soon! Go ahead and read some of the tips that have been posted, and feel free to ask any questions you have to your fellow students on the "Discussions" tab.

- Bijan