Question

find value of angle ecd if angle a ,b,c are in ratio 5:3:2
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Answer 1

Answer:

54°

Step-by-step explanation:

Given a:b:c are in ratio 5:3:2

Let the common ratio be x

; a=5x b=3x c=2x

sum of a,b and c is 180 (angle sum property)

5x+3x+2x=180

x=18

c=2x=2 multiply 18= 36

Angle ACB +Angle ACE +Angle ECD= 180

36 + 90 + ECD=180

Angle ECD = 54