3 years ago

Find DEC pls give through explanation

Mathematics

1 answer:

galina1969 [7]3 years ago

3 0

$\large{\rm{\underline{\underline{Answer:}}}}$

Angle AEB and Angle DEC are opposite angles which means they are equal in measure. Hence,

⇛ Angle AEB = Angle DEC

⇛ 9x + 8° = 3x + 42°

⇛ 9x - 3x = 42° - 8°

⇛ 6x = 34°

⇛ x = (34/6)°

To find: Angle DEC = 3(

34/6 °) + 42° = 59° (Ans)

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