Question

Answer this question ...By full method.


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Answer 1

Step-by-step explanation:

the value of angle DEC is 80

Answer 2

Answer:

given : angleBAC =5x

angleACB=7x

angleCBA=6x

by angle sum property :

A°+B°+C°=180°

5x + 6x+ 7x = 180°

18x = 180

x= 180/18

x = 10

therefore,

A°= 5x=50°

B°= 6x= 60°

C°= 7x= 70°

By angle sum property :

70°+30°+E = 180°

100°+E= 180°

E = 80°

Step-by-step explanation:

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