Question

find X where angle A= 40° and angle BED= 120°.
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Answer 1

Answer:

d=10°

Step-by-step explanation:

in ∆ABC,

A+B+C=180. (Angle sum property)

40+90+B=180

130+B=180

180-130=C

B=50°

in ∆BED

B+E+D=180. (angle sum property)

50+120+D=180

170+D=180

D=180-170

D=10°

Answer 2

Answer:

the answer is 10

Step-by-step explanation:

it is very easy I think no sol. is needed