Question

solve this fast please​

Answer 1

Answer:

(1)

angle AOB =130°

we know the angle of same/equal chord of same circle are also equal.

then,

angle DOC =angle AOB

=130°

Since OCD is a triangle and two sides are equal

Since OCD is a triangle and two sides are equal I.e. radii OC =radii OD

Then, angle OCD = angle ODC. ...... (1)

angle OCD + angle ODC + angle DOC = 180°

angle ODC + angle ODC + angle DOC = 180°

2(angle ODC) + angle DOC = 180°

2(angle ODC) +130° = 180°

2(angle ODC) = 180°-130°

2(angle ODC) =50°

angle ODC =50/2

angle ODC = 25°