Question

In given fig. AC is perpendicular to CE A:B:C=5:3:2.find value of ECD

Answer 1

Answer:

let a value be x

5×x=5x

3x

2x

5x+2x+3x=10x

10x=180

x=180÷10

x=18

5×18=90

3×18=54

2×18=36

90+54+36=180

as it is a right angle so angle ECD =180÷2=90