If A, B, C, are the interior angles of a triangle ABC, prove that
(i) 
(ii) 
(i) Since, A, B, C, are the interior angles of a triangle ABC.
Therefore,
Hence proved.
(ii)
Hence proved.
6
If A, B, C, are the interior angles of a triangle ABC, prove that
(i)
(ii)
(i) Since, A, B, C, are the interior angles of a triangle ABC.
Therefore,
Hence proved.
(ii)
Hence proved.