Question

if 3a= b+c then cotB/2 .cotC/2=

Answer 1

Answer: the correct is 2

Step-by-step explanation:

Given that: 3a=b+c

cot A\2*cotB\2 =√[s(s-b)\(s-a)(s-c)]*

√[s(s-c)\(s-b)(s-a)=

s\s-a = 2a\2a-a = 2a\a = 2

Hence it is the correct answer

Answer 2

Hope this helps you..

Thank you.