Question

some one help please fast​

Answer 1

in triangle abd angle B =90° (angle from diameter of circle)

and ABCD is a cyclic quadrilateral {some of opposite sides of cyclic quadrilateral is 180}

so, angle bcd +bad =180 and

angle BAD will be 30° first answer

now ,sum of triangle is equal to 180 we All know... so Angle ADB will be 60°

Answer 2

Answer: a) 30°

             b) 60°

Sorry for the mess on top