Answer:

Step-by-step explanation:
The picture of the question in the attached figure
we know that
----> by SOH (opposite side divided by the hypotenuse)
we have

solve for BC

substitute the values


2 solutions. This is because the parabola will cross the x axis twice. We know this because -5 means the vertex will be 5 units below the x axis. and the parabola opens upwards because the first coefficient is positive. Hope this helped :)
Answer:
0
Step-by-step explanation:
Arc sec(1)=0, tan(0)=0
Answer:
b = y intercept
Step-by-step explanation:
y = mx +b
This is the slope intercept form of a line
The m is the slope and the b is the y intercept