Prove each of the following identities:
Consider L.H.S. = 
+ 
= 
= 
= 
= 
= 
= 2 cosec θ/cot θ
= 2 (1/sin θ)/(cos θ/sin θ)
= 2/ cos θ
= 2 sec θ
= R.H.S.
Hence, proved.
19
Prove each of the following identities:
Consider L.H.S. = +
=
=
=
=
=
= 2 cosec θ/cot θ
= 2 (1/sin θ)/(cos θ/sin θ)
= 2/ cos θ
= 2 sec θ
= R.H.S.
Hence, proved.