This is a linear relationship as the rate of change is constant, ie constant velocity. And the slope represents the velocity, and slope is:
m=(y2-y1)/(x2-x1)
m=(50-25)/(2-1)=25/1
m=25
So the rate of change is 25 mph
Draw a diagram
the diagram is a right triangle
use the tangent function
tan=opposite/adjacent
call the angle "θ"
tanθ=15/57
tanθ=0.2631579
use the arctan function on your calculator
tan-1θ=0.2631579
θ=14.74356312º or 14º 44' 36.827"
Answer:
A) m∠A = 40°, m∠B = 75°, m∠C = 65°
B) m∠A = 136°, m∠B = 28°, m∠C = 16°
E) m∠A = 60°, m∠B = 60°, m∠C = 60°
Step-by-step explanation:
edge
