Question

is it ok now plz help
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Answer 1

Answer:

65

Step-by-step explanation:

from the arc DC it is making an angle at the centre and making another angle at B as well so

angle DOC =2*angle DBC

the difference is given for both of these angle which is 25 that means angle DOC-ANGLEDBC=25

2*angle dbc-angle DBC=25

angle DBC=25

and we know that angle in a semi circle is 90

that means

angle ADB=90

and angle BDE will the linear pair of angle ADB so angle BDE=90

in triangle BDE we know two angles now

so that angle =180-90-25= 65

so angle DEB=65