"Line segments AB and CD   intersect at O such that `A C||D B` . If `/_C A B=35^0`
Channel: Doubtnut
Date: 2020-07-12

"Line segments AB and CD
 
  intersect at O such that `A C||D B`
 . If `/_C A B=35^0`
 and `/_C D B=55^0`
 find the `/_B O Ddot`"