A 20-foot ladder leaning against a building makes an angle of 60° with the ground. How far from the
base of the building is the foot of the ladder?
MA

cos60=b20orb=20⋅cos60=20⋅12=10 feet.

Step-by-step explanation:

i’m here for points.

c.

step-by-step explanation:

substitution for (0,1)

y=x^2+4x+1

1=0^2+4(x)0+1

1=0+4(x)0+1

1=4(x)0+1

1=0+1

1=1

substitution for (-3,-2)

y=x+1

-2=-3+1

-2=-2