(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

sin(pi +A) sec(pi-A)

--------- + ---------- = 0

cos (2pi + A) csc(2pi-A)

2. Relevant equations

cscx=1/sinx

secx=1/cosx

sin(x+y)=sinxcosy+cosxsiny

sin(x-y)=sinxcosy-cosxsiny

cos(x+y)= cosxcosy-sinxsiny

cos(x-y)= cosxcosy+sinxsiny

3. The attempt at a solution

LS

sin pi cosA + cosA sin pi || 1/cos pi cos A + sin pi sin A

------------------------+--------------------------

cos 2pi cosA + sin 2pi sinA || 1/sin pi cos A - cos pi sin A

the || is a seperator of the fractions

^

if it helps, i got this one to equal zero :)

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# Homework Help: Trignometric identiy (LOADS o HELP ;D )

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