Question

the angle of inclination of the line joining (5,7) and (7,5) with the x axis is​

Answer 1

Step-by-step explanation:

slope=y2-y1/x2-x1

m=5-7/7-5

= -2/2= -1

tanA= -1

tan π\4=1

tan(π-π\4)= -1

tan 3π\4= -1

A=3π\4