who can help me

please anyone know how to solve this please do

cot(∏/2-u)=tanu
I try solveing it but I can't , it will be huge help if someone help me

Quote:

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Originally Posted by Ro0omio

cot(∏/2-u)=tanu

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I can but sorry because i can't express it in english


Cos(∏/2-u)/Sin(∏/2-u) = Sin u/ Cos u= Tan u

thanks
I have other question
cos(x+h)-cos x /h = cos x (cosh-1/h)-sinx(sinh/h)
sorry if i tired you ( about english Iam not good too)

Quote:

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Originally Posted by Ro0omio

cos(x+h)-cos x /h = cos x (cosh-1/h)-sinx(sinh/h)

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Cosx cosh-Sinx Sinh-Cosx/h=
Cosx(Cosh-1)-Sinx Sinh/h
=Cosx(cosh-1/h)-sinx(sinh/h) ( the other side )

hope that i help

huge thanks for you

any time ( there is no thanks between friends ) >> any equation you want solve it just writ it here .. & any question in physics face you tel me about ( if i know i will solve it )