We can name an angle either by naming its vertex or by three letters , keeping the letter of vertex in between.
so here vertex is F
we can name it as ∠EFG, ∠F , ∠GFE
This strikes out the option B that is ∠G
so option B is the answer
Could you tell me what your question is exactly?
We can use substitution to solve this equation in here y=6 and x=0 .
Hope this help you !
Answer:

Step-by-step explanation:
we know that
In the right triangle STU
The sine of angle T is equal to the opposite side angle T divided by the hypotenuse

substitute the values

