Answer:
10.80
Step-by-step explanation:
tan42=x/12
x=12tan42=10.80
81=3^4
I hope this helps! Good luck!
Formula of the area of triangle
A=(1/2)a*b*sin(C)
a, b - sides
C- an angle between sides a and b.
Probably, this question means that you need to know sin of the angle.
I don’t know all of it but....
Axis of symmetry is x=5
Vertex changed to (5,8)
Parabola opens down
