Question

Pt tan(a+b/2) = cot(c/2)

Answer 1

Step-by-step explanation:

Let a, b , c are the angles of a triangle.

.°. a + b = 180 - c

Now, we have,

L.H.S =

$\tan( \frac{a + b}{2} ) \\ \\ = \tan( \frac{180 - c}{2} ) \\ \\ = \tan(90 - \frac{c}{2} ) \\ \\ = \cot( \frac{c}{2} )$

= R.H.S

Hence, Proved

Answer 2

Answer:

Step-by-step explanation: