cos b = -9/1681 sec b = -1681/9
sin b = 40/1681 csc b =1681/40
tg b = -40/9 cot b = -9/40
let me know if there is some thing is not clear
why do you give me 1 star !!
sorry man, I dont think I meant to give you 1 star, you have been such a great tutor!!! thank you. I will always give you 5 stars!
anyway, it's ok
if you have anything else i will do with my please
if you can change my rating (1 star), please change it !!
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