D А 50° 70° x B Fig. 15.128 (x) please help me

Answer:
The value of x is 60⁰.
Step-by-step explanation:
As we know that the sum of interior angles of triangle is 180⁰.
So, here we can say that :
[tex]\implies[/tex] Sum of ABC = 180⁰
[tex]\implies[/tex] A + B + C = 180⁰
[tex]\implies[/tex] 50⁰ + 70⁰ + C = 180⁰
[tex]\implies[/tex] 120⁰ + C = 180⁰
[tex]\implies[/tex] C = 180⁰ - 120⁰
[tex]\implies[/tex] C = 60⁰
[tex]\star{\underline{\boxed{\sf{\red{C = 60^{0}}}}}}[/tex]
Hence, the Value of C is 60⁰.