If x+y+z = π Then prove that Cot x/2 +cot y/2 + cot z/2 = cot x/2 × cot y/2 × cot z/2.

If x+y+z = π Then prove that Cot x/2 +cot y/2 + cot z/2 = cot x/2 ×

1.	If x+y+z = π Then prove that Cot x/2 +cot y/2 + cot z/2 = cot x/2 × cot y/2 × cot z/2.
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