Use Pythagorean identities to write the expression as an integer.

tan^2 4β - sec^2 4β

Please help me i dont know what to do...

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- January 26th 2010, 06:12 PMpurplec16Pythagorean identities
Use Pythagorean identities to write the expression as an integer.

tan^2 4β - sec^2 4β

Please help me i dont know what to do... - January 26th 2010, 06:58 PMskeeter
- January 26th 2010, 07:16 PMpurplec16
lol...omg i'm still lost...

- January 26th 2010, 07:25 PMpurplec16

is this the next step, i dont understand how you get it to equal to an integer...i.e. get rid of the beta - January 26th 2010, 07:27 PMpickslides
Skeeter has given you the answer. You don't need to get rid of beta.

- January 26th 2010, 07:29 PMpurplec16
Oh ok...wow i knew how to do it then...

so what if it was something like

- January 26th 2010, 07:30 PMpurplec16
Oh ok...wow i knew how to do it then...

so what if it was something like

what would happen in that case? - January 26th 2010, 07:33 PMpickslides
- January 26th 2010, 07:40 PMpurplec16
Sorry to bother you but would u be able to assist me in solving something like this:

- January 26th 2010, 07:46 PMpickslides
What are you trying to do? Just simplify?

make

- January 26th 2010, 07:47 PMpurplec16
yes simplifry the expression

- January 26th 2010, 07:51 PMpickslides
- January 26th 2010, 08:16 PMpurplec16
Quick Question for this expression:

how do u get rid of the to make it equal to 5? i understand that it will be equal to 5

is it that i dont have to worry about the theta and jus simplify it equal to five

i.e.

- January 26th 2010, 08:29 PMpickslides

Now factor out the 5 and follow what I did in post #8. - January 26th 2010, 08:31 PMpurplec16
Ok, thank you so much, I did that