If A, B and C are interior angles of a triangle ABC, then show that:

Murali · April 1, 2019, 5:35am

If A, B and C are interior angles of a triangle ABC, then show that: sin ( $\frac { A }{ 2 }$ ) = cos $\frac { A }{ 2 }$ .

Murali · April 1, 2019, 5:36am