Find the inclination θ of a line passing through the points (2, -2), (7, 9

Possible Answers
A. 1.144 radian(s) or 65.556 degrees
B. -1.44 radian(s) or -65.556 degrees
C. -1.997 radian(s) or -114.444 degrees
D. -0.427 radian(s) or -24.444 degrees
E. 0.427 radian(s) or 24.444 degrees

Question

Find the inclination θ of a line passing through the points (2, -2), (7, 9

Possible Answers
A. 1.144 radian(s) or 65.556 degrees
B. -1.44 radian(s) or -65.556 degrees
C. -1.997 radian(s) or -114.444 degrees
D. -0.427 radian(s) or -24.444 degrees
E. 0.427 radian(s) or 24.444 degrees

anonymous · Answer

Exact Duplicate: http://openstudy.com/users/doublebass7#/updates/4fc15a8ce4b0964abc833ee4

phoenixfire · Answer

you have adjacent and opposite.. so you use tan(x) = o/a
a = 7-2
o=9-(-2)
x=taninverse(o/a)