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2 years ago

6

Please answer this question now

1 answer:

lord [1]2 years ago

6 0

Answer:

112°

Step-by-step explanation:

By inscribed angle theorem:

$m\widehat {BCD} = 2\times m\angle BAD\\\therefore m\widehat {BCD} = 2\times 129\degree \\\therefore m\widehat {BCD} = 258\degree\\\\\because m\widehat{CD} = m\widehat {BCD}-m\widehat{BC} \\\therefore m\widehat{CD} = 258\degree - 146\degree \\\huge \red {\boxed {\therefore m\widehat{CD} = 112\degree}}$

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