Question

(2)
from
the adjacent figure AB is a straight
line. Find the value of xo
2x-199
37++
А A
o
B​

Answer 1

ANSWER :

Since

AB is a straight line, the sum of all the angles onAB at a point O is 180 o .∴(3x+7) o

+(2x−19)o+x=180 o

(Linear angles)⇒6x−12=180⇒6x=192⇒x=32 o

So, ∠AOC=(3x+7) o =(3×32+7) o =103o ,∠COD=(2x−19)o=(2×32−19)o=45o ,∠BOD=32o

follow me

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Answer 2

Answer:

Since

AB

is a straight line, the sum of all the angles on

AB

at a point O is 180

o

.

∴(3x+7)

o

+(2x−19)

o

+x=180

o

(Linear angles)

⇒6x−12=180⇒6x=192⇒x=32

o

So, ∠AOC=(3x+7)

o

=(3×32+7)

o

=103

o

,

∠COD=(2x−19)

o

=(2×32−19)

o

=45

o

,∠BOD=32

o