Answer:
[tex]D = 161^o[/tex]
Step-by-step explanation:
Given
[tex]\angle B = 19^o[/tex]
Required
Find D
The label of the quadrilateral are not clear. However, a more complete question illustrates that B and D are opposite sides.
To solve for D, we make use of:
[tex]B + D = 180^o[/tex] ---- opposite [tex]sides[/tex] of a [tex]cyclic \\[/tex] quadrilateral
Make D the subject
[tex]D = 180^o -B[/tex]
[tex]D = 180^o -19^o[/tex]
[tex]D = 161^o[/tex]
