Show that:
(i) 
(ii) 
(i) 
We have,
LHS = 
RHS = 
∵ LHS = RHS
Hence, equation is true.
(ii) 
We have,
LHS = 
RHS = 
∵ LHS = RHS
Hence, equation is true.
8
Show that:
(i)
(ii)
(i)
We have,
LHS =
RHS =
∵ LHS = RHS
Hence, equation is true.
(ii)
We have,
LHS =
RHS =
∵ LHS = RHS
Hence, equation is true.