In the given figure,∠OAB=75∘,∠OBA=55∘ and ∠OCD=100∘. Then, ∠ODC=? (a)20∘ (b)25∘ (c)30∘ (d)35∘

In the given figure,∠OAB=75∘,∠OBA=55∘ and ∠OCD=100∘. Then,

1.	In the given figure,∠OAB=75∘,∠OBA=55∘ and ∠OCD=100∘. Then, ∠ODC=? (a)20∘ (b)25∘ (c)30∘ (d)35∘
Answer» In the given figure, $∠ O A B = 75^{\circ}, ∠ O B A = 55^{\circ}$ and $∠ O C D = 100^{\circ}$ . Then, $∠ O D C = ?$ $(a) 20^{\circ}$ $(b) 25^{\circ}$ $(c) 30^{\circ}$ $(d) 35^{\circ}$