If A=(2,1), B=(1,2), C=(3,1) Find the angle ABC using scalar products​

angle efh= angle egh

i think it would be c

mark brainliest if im right

step-by-step explanation:

answer: -10

step-by-step explanation:

s(t) = 1 - 10t

s(x) = 1 - 10x

s(x + h) = 1 - 10(x + h)

            = 1 - 10x - 10h

s(x + h) - s(x) = 1 - 10x - 10h - (1 - 10x)

                      = 1 - 10x - 10h - 1 + 10x

                      = -10h

= -10

hi there, i would be interested to you with your test, may you add the questions and answer options.

- : )