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Sagot :
Answer:
[tex]x[/tex] = 3°
[tex]z[/tex] = 106°
Step-by-step explanation:
Since the angles are opposite each other, we know that [tex]9x+47[/tex] = 74°. We can use this information to solve for [tex]x[/tex]:
74° = [tex]9x+47[/tex]
27° = [tex]9x[/tex]
3° = [tex]x[/tex]
Since we know the whole system has to add up to 360°, or one rotation we can find what [tex]z[/tex] + the angle opposite it is equal to, and from there find [tex]z[/tex]:
360° = 2(74°) + 2[tex]z[/tex]
360° = 148° + 2[tex]z[/tex]
212° = 2[tex]z[/tex]
106° = [tex]z[/tex]
Question : -
Given the figure below , find the values of x and z
Given : -
- Angle 1 = 74°
- Angle 2 = z°
- Angle 3 = ( 9x + 47 ) °
To find : -
- Values of x and z
Concept : -
For doing such types of questions we must have concept and knowledge of linear pairs of angles and vertically opposite angles .
So let's Starting the Solution : -
As we know that Angle 1 and Angle 3 are vertically opposite angles . Therefore , we can equate them and easily find the value of x . So :
- 9x + 47 = 74
- 9x = 74 - 47
- 9x = 27
- x = 27/9
- x = 3°
Therefore , value of x is 3° .
Now Verifying :
- 9 ( x ) + 47 = 74
- 9 ( 3 ) + 47 = 74
- 27 + 47 = 74
- 74 = 74
- L.H.S = R.H.S
- Hence , Verified .
Therefore , our value for x is correct .
Now , finding value of z :
As we know that Angle 1 and Angle 2 are Linear pair . Therefore , there sum is equal to 180° . So :
- z + 74° = 180°
- z = 180° - 74°
- z = 106°
Therefore , value of z is 106° .
Now Verifying :
- 106° + 74° = 180°
- 180° = 180°
- L.H.S = R.H.S
- Hence , Verified .
Therefore, our answer is correct .
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