In the given figure, chords AD and BC of the cirle, are extended to E and F, respectively.
If ∠CDE = 105°, ∠DCF = 65°, then the value of ∠ABF and ∠EAB is?
Answer & explanation
Correct answer: option 2
∠ABF = ∠CDE
∠EAB = ∠DCF
(Exterior angle theorem)
∠ABF + ∠EAB = 105° + 65° = 170°