Answer:
The correct answer is last option 3√2 units
Explanation:
From the figure we can see that two small right angled triangle.
These two triangle combined to form a large right angled triangle.
To find the value of x
Consider the small triangle with hypotenuse x and one side 3 units.
The angles of this triangle be 45°, 45° and 90°, then the sides are in the ratio 1 : 1 : √2
Therefore we can write,
3 : 3 : x = 1 : 1 : √2
x = 3√2
The correct answer is last option 3√2 units