A, B, C and D are points on the circumference of a circle, centre O. ED is a tangent to the circle.

E

Angle ODB = 25°

Work out angle BAD.

You must give a reason for each stage

of your working.

cyclic quadrilateral

BAD=15°

+

25

D

B В

Total marks: 4

i get you, what you should do is think of the positive things that would come out of it. it will make yours parents proud and raise your grade. you should always try and if you can't focus tell the teacher.

step-by-step explanation:

yes

step-by-step explanation:

they have to be opposite and reciprocal of eachother.