Answer:
63°
Step-by-step explanation:
- [tex]m\angle BKD =\frac{1}{2}(m\widehat {AE} +m\widehat {BD} )[/tex]
- [tex]\implies m\angle BKD =\frac{1}{2}(86\degree +40\degree)[/tex]
- [tex]\implies m\angle BKD =\frac{1}{2}(126\degree)[/tex]
- [tex]\implies m\angle BKD =63\degree[/tex]
