Answer:
x = 30°
Step-by-step explanation:
84° + 66° + x = 180°
150° + x = 180°
x = 180° - 150°
The value of x is 30°
The sum of angles of a triangle is equal to 180°
so, x°+66°+84° = 180°
=> x° + 150° = 180°
=> x° = 180°-150°
=> x = 30°
