i'm trying to brush up on basic math and i decided to write

You've only done one step and already question the validity. ..
Divide the numerator and denominator by cosxcosy

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6KB, 200x175px

>>8453699
but how are you supposed to know to uncancel such a thing? intuition of trying to make everything in terms of tan?

>>8453705
Yes exactly.

D I V I D E

B Y

C O S X C O S Y

W E W

if you can't figure this out instantly then quit while you're ahead.

>>8454155
do you know interuniversal theory by heart? if not quit while you're still ahead gaijin.

>>8453690
Why are you even bothering with something like this? You won't gain wisdom fooling or intuition fooling around with trig identities. Move on. Mastery of trig will come naturally when you're forced to deal with it in calculus

>>8454396
because i don't want to mess with them during an assignment that's due.