Question

A B
B С
41. If cot - cot —=c, cot — cot-=a,
2 2.
2 2
C А
1 1 1
cot -cot —=b, then
- + +
2 2
S-a
s-b
S-C
1) 1. 2) 2
3) abc
4) A​

Answer 1

Answer:

sorry

I can't understand what is there

Answer 2

Answer:

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