Now, usually about 1 ruler is the length of a piece of paper. But this all depends on the paper. It'd be a safe bet to say 1.
Coordinates for B = ( -13,7)
8.375 = 8 375/1000 = 8375/1000 reduces to 67/8
That is adjacent and huptonuse
soh cah toah
so that is cos
cos(x)=15/21
so tehrfor
cos⁻¹(15/21)=x
where cos⁻¹ means inverse not 1/cos
use your calculator to evaluate cos⁻¹(15/21) in degrees
it is about 44.4153 degres, rounded to 44 degrees
t-19/7
Multiply the entire expression by 7
7t -133
7t = 133
133/7 = 19
t = 19
