Question

Find the value of x.
A) 21
B) 27
C) 31
D) 34

Answer 1

3x+1=64°【Vertically opposite angle】

3x=63°

x=

$\frac{63}{3}$

x=21°

so ,(A) 21° is correct option.....

HOPE IT WILL HELP YOU.......

Answer 2

The correct answer is Option - A

EXPLANATION :

Given,

64° and (3x +1) °

In the above figure let us take the intersecting point as O.

Let us assume < AOC = 64°

< BOD = (3x+1) °

<AOC = < BOD ( Opposite angles are equal.)

64° = 3x+1

64° - 1° = 3x

63° = 3x

x = 63/3

Thus, x = 21