Question

in angle ABC if AB equal 33 degree BC equal 18 degree find angle B

Answer 1

Ab+Bc=180
33+18=180
51=180
=180-51
= 129

Answer 2

<ABC+<BAC+<ACB=180'
<B+18'+33'=180'
<B+51'=180'
<B=180'-51'
<B=129'