cot(x-2pi) + csc(pi-+)=0 cot x-cot 2pi +csc pi - csc x=0 Ans= pi/3 t 2 npi; nEZ
I ilynch New member Joined Mar 21, 2010 Messages 1 Mar 21, 2010 #1 cot(x-2pi) + csc(pi-+)=0 cot x-cot 2pi +csc pi - csc x=0 Ans= pi/3 t 2 npi; nEZ
M Mrspi Senior Member Joined Dec 17, 2005 Messages 2,128 Mar 21, 2010 #2 ilynch said: cot(x-2pi) + csc(pi-+)=0 cot x-cot 2pi +csc pi - csc x=0 Ans= pi/3 t 2 npi; nEZ Click to expand... Please check to see that you've typed the problem correctly. In particular, this does not make sense: csc(pi-+) Then, please check the identities for the sum or difference of two angles. cos (A - B) = cos A cos B + sin A sin B sin (A - B) = sin A cos B - cos A sin B And, csc A = 1 / sin A I think you'll probably need ALL of those.
ilynch said: cot(x-2pi) + csc(pi-+)=0 cot x-cot 2pi +csc pi - csc x=0 Ans= pi/3 t 2 npi; nEZ Click to expand... Please check to see that you've typed the problem correctly. In particular, this does not make sense: csc(pi-+) Then, please check the identities for the sum or difference of two angles. cos (A - B) = cos A cos B + sin A sin B sin (A - B) = sin A cos B - cos A sin B And, csc A = 1 / sin A I think you'll probably need ALL of those.
