I would say B. The second picture, it's slightly less than a 90 degree angle, so it looks like it should be that.
Hope this helps!! :)
Answer:
The value of x will be 8
Step-by-step explanation:
We have given that 
We have to find the value of x
As 
For finding the value of x we have to square both side
On squaring both side
We done squaring both side for easy simplification

So x = 8
So the value of x will be 8
So answer will be 8