Prove each of the following identities:
Consider L.H.S. = 
+ 
= 
+ 
= 
+ 
= 
+ 
= 
+ 
= 
– 
= 0
= R.H.S.
Hence, proved.
32
Prove each of the following identities:
Consider L.H.S. = +
= +
= +
= +
= +
= –
= 0
= R.H.S.
Hence, proved.