Answer:
x = 1.3
Explanation:
according to Pythagoras theorem,
3.2² = x² + base²
where base is unknown,
cos 23° = base / 3.2
cos 23° * 3.2 = base
base = .92 * 3.2 = 2.94
substituting the value in the pythagoras theorem,
3.2² - 2.94² = x²
x² = 10.24 - 8.64 = 1.6
x = √1.6 = 1.26
rounding to the nearest tenth,
x = 1.3