Given that the length of the hypotenuse is x and the angle is 53°
The length of one of the leg of the triangle is 45.
We need to determine the value of x.
Value of x:
The value of x can be determined using the trigonometric ratio.
Thus, we have;

Substituting the values, we get;

Simplifying the terms, we have;


Dividing, we have;

Therefore, the value of x is 74.77(app)
Hence, Option B is the correct answer.