Answer:
X= 70.5
Explanation:
The area of a triangle is 180
180 - 39 = 141
141/2 = 70.5
70.5 + 70.5 + 39 = 180
x = 51°
The sum of all angles in a triangle is 180°. (Angle Sum Property)
We already know 2 angles, the right angle and the 39°.
(x + 90 + 39)° = 180°
(x + 129)° = 180°
x = (180 - 129)°
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