Question

7 In Fig. 10.57, if x = 42, thеn determine (а) у (b) AOD​

Answer 1

Answer:

given, x=42

so, 3(42)=126

so angle COB =126

W.K.T angle COB=angle AOD (since vertically opposite angles)

therefore, angle AOD=126

(a) W.KT AOC+COB=180

since linear pair angles

so, 2y+126=180

2y=180-126

2y=54

y=54/2

y=27

Answer 2

Answer:

in this pic 3x+2y should be equal to 180°because of linear pair .. Then x=42 substute on 3x+2y 》126+2y=180°

2y=180-126

y=54/2=27

this is the ans for (a)

due to opposite angels are equal angle O=126

hope it helps u