Prove each of the following identities:
Consider the left – hand side:
L.H.S. = 
= 
= 
= 
= 
= 
= 1/cos θ
= sec θ
= R.H.S.
Hence, proved.
8
Prove each of the following identities:
Consider the left – hand side:
L.H.S. =
=
=
=
=
=
= 1/cos θ
= sec θ
= R.H.S.
Hence, proved.