In the figure given, we have a triangle with angles 30°, 70°, and X°.
Since the sum of the angles in any triangle is 180°, we can use this information to find the value of X.
30° + 70° + X° = 180°
Now, solve for X:
X° = 180° - (30° + 70°)
X° = 180° - 100°
X° = 80°
So, the value of X is 80°.