#### fallinbehind

##### New member

- Joined
- Oct 9, 2005

- Messages
- 13

- Thread starter fallinbehind
- Start date

- Joined
- Oct 9, 2005

- Messages
- 13

G

if you give me the numbers i will give you the equation to figure it out

- Joined
- Apr 12, 2005

- Messages
- 10,078

You should have a small table of frequently used values. Find it in your book or ask your teacher where to find it. You should memorize it.fallinbehind said:I'm supposed to find the exat measure of the variables in the right triangles and all I know is one side length and one angle other than the 90 degree angle. Please help

- Joined
- Oct 9, 2005

- Messages
- 13

- Joined
- Oct 9, 2005

- Messages
- 13

- Joined
- Oct 9, 2005

- Messages
- 13

but how do i use that equation what numbers do i plug in and what will it help me solve????

G

to find the sides do 8/cos45....then do that for the other side

- Joined
- Oct 9, 2005

- Messages
- 13

- Joined
- Oct 9, 2005

- Messages
- 13

thanx for all the help

G

no problem...i know how getting stuck in math is...thats why im here too

First, note the trig. functions are for right triangles, if you have a triangle of another type you must either divide it in such a way so that it is a right triangle or you need to use the law of sines/law of cosines (which is something you will probably talk about fairly soon in your class).

A will stand for the angle in my examples below.

Sin A = length of side of triangle opposite the angle/ length of the hypotenuse

Cos A = length of side adjacent to angle/ length of the hypotenuse

Tan A = length of side opposite the angle/ length of side adjacent to the angle

These aren't all of the trig identies (There are 3 more, they are basicaly defined as 1/cos, etc so learning these is important!) but they are the basic ones.

You will certainly want to get help from your teacher/consult your math book to be sure you understand this and understand it well.