Because it is closer to 0 and -1
Answer:
cos47° = 
Step-by-step explanation:
cos47° =
= 
The thousands is the answer and you spelled does wrong
X+9 ? I'm not sure if that was the kind of answer you were looking for but that's what I got out of that.
The value of x is 5. Angle one and four are vertical. You can do this by writing 7x = 3x + 20. Isolate the variable by moving 3x to the other side. If you do this, 3x becomes negative, and you end up with 7x-3x = 20 --> 4x = 20.
x=5.