If tan x=.67, and cos x=.83, what is sin x

0.56

Step-by-step explanation:

                                  sin x

tan x is defined as

                                  cos x

and we can solve this for sin x:  sin x = (cos x)(tan x)

which here is:  sin x = 0.83(0.67) = 0.56 (rounded up from 0.5561)

The points are on the same line, so you can basically count the distance.

21-3=18

Distance is 18.