Question

Find y
with complete explanation

Answer 1

since angle ACB is 40 degree, angle PDB is also 40 degree (angles made by same arc)
Now use angle sum property in triangle PDB
you'll get y = 20 degree

Answer 2

Hello sir,

Given:
/_ ACB = 40°
/_ DPB = 120°

To Find:
/_ y

Solution :
/_ ACB=/_ PDB ( Angles in the same segment)
/_ PDB = 40°

In ∆DPB
/_DPB+/_PDB+/_y = 180° (Angle Sum property of ∆s)

120° + 40° +/_y = 180°

160° +/_y = 180°

/_ y = 180°-160°

/_y = 20°

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Hope this helped u..