The answer is 84.9.
The picture isn't that clear, however I'm considering that the side marked 0 is the one you need to find.
So in the right angle triangle the side marked 0 is the hypotenuse. And the given side is opposite to the known angle - 45.
So since we know the opposite side and we have to find the hypotenuse, we use the sin function.
So solving for x ----->