Question

Help on trigo Identities? plss

Answer 1

What is you problem about trig identities

Answer 2

Might want to grab the Trig sheet here:
http://tutorial.math.lamar.edu/cheat_table.aspx

It lists the standard ones.

Answer 3

We only learned 3 types of trigo identities...And our professor ask us to search for more....

Answer 4

But i dont understand the new onesi searched..

Answer 5

Well, that page I linked has a lits with a lot of them.

Answer 6

There are lots and lots of them! Half angle and double angle and power reducing...

Answer 7

What are those?
Files?

Answer 8

Most of them come back to being related to just a handful. The Pythagorean is one of the foundations and the ratios are another set. From those, many things are able to be found.

Answer 9

which one should i print out? All of them?

Answer 10

Trig Cheat Sheet - [pdf] - Here is a set of common trig facts, properties and formulas. A unit circle (completely filled out) is also included. Currently this cheat sheet is four pages long.


That one is all the trig stuff. The other that says trig is the same things, just smaller print. Ther other ones are for other classes/topics.

Answer 11

I think I remember my professor telling there are 60 formulas on the identities?

Answer 12

Well if ur prof didn't say how many , then just take as much as you think is okay

Answer 13

Well, you can make a ton of them if you really get into it. If you take two identities and use them to make something "new" it can be said that us another identity.

Answer 14

I think Im going to take them all......How is that? You mean when you mix pythagorean and quotient identities it has another name?

Answer 15

Well, that is how they made the named ones. By finding the basics and making others. The named ones are generally ones you can end up using. But you could make a 'new" and unnamed one. It would still be an identity, just not a commonly used one.

Answer 16

So they are 12 identities all in all?

Answer 17

In theory there is an infinite number. From a practical standpoint, it is more like what your teacher said. Also, the Pythagorean Identity is either 1 identity or 3 identities depending on your viewpoint.

Answer 18

Oh my god so much to write then of how many identities are there...

Answer 19

If you look at 3 or 4 lists, you will see they have the same ones over and over. I would count those for a good "how man" number.

Answer 20

Like here:
http://www.sosmath.com/trig/Trig5/trig5/trig5.html
There are 6 reciprocal identities at the top. They are also in the other PDF list. So 6 of those, 3 pythagorean Identities, etc.

Answer 21

let me see

Answer 22

Saw that already.