Question

need your help friends

Answer 1

100
because < ACB = < ADB = 90

Answer 2

$\Underline\bold{ANSWER}$

Hi, here ur answer
we know that angle make by diameter in a semi-circle is 90

so,from the figure we got

angle ACB=90

ADB=90

And also we know that sum of the interiors angles in quadrilateral is 360

so,90+90+100+CAD=360

180+100+CAD=360

280+CAD=360

=>CAD=360-280
=>CAD=80

so, angle CAD is 80

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