tmr is susposed to be chem and english, since its not good to focus too much on chem alone, i went to do the math practice. after wasting 2 pcs of paper on one qns and still being unable to solve it, i decided to go revise for history instead.

tan²A - tan²B = (cos²B - cos²A)/(cos²A cos²B), for all values of x, prove

havnt bothered to try it from the left side though, maybe it'll work

anyway, the stuff i tried to rmb for chem is like suspending in my mind, like its gonna fall out anytime -.-, nvm, tmr go find ppl to leech from b4 exams
Sianz ppl | 9:52:00 pm