Question

HELP ME PLESE ,3 I NEED THIS

Answer 1

270°

Explanation:

`m\widehat{BC} = 360\degree - (146\degree + 90\degree) \\</p><p>m\widehat{BC} = 360\degree -236\degree \\</p><p>m\widehat{BC} = 124\degree \\\\</p><p>m\widehat{ABC} =m\widehat {AB} + m\widehat {BC} \\</p><p>m\widehat{ABC} =146\degree + 124\degree \\</p><p>\huge \red {\boxed {m\widehat{ABC} =270\degree}} \\</p><p>`