Question

solve question no. 8​

Answer 1

Answer:

Step-by-step explanation:

the answer is 80.

first find angle bac using angle sum property

then put bac equals to bdc as these are angles in same segment

hope this helps you

pls mrk s brnlst

Answer 2

angle ABC + angle ACB+ angle BAC=180°

69°+31°+ angle BAC =180°

90° + angle BAC =180°

angle BAC= 180°-90°

angle BAC= 90°

therefore ∆BAc is a right angle ∆

therefore seg BC is a diameter because properties of semicircle

therefore angle BDC is 90°

because angle inscribed in semicircle is a right angle