don't you mean b?
even so...
3b-12=5b-2
-10=2b
b= -10/2
b= -5
\(cos\theta= \boxed{adjacent/hypotenuse}\)
I remember sin, cos, and tan by SOHCAHTOA
sin= opposite/hypotnuse
cos=adjacent/hypotnuse
tan= opposite/adjacent
12
16+(-4)=16-4=12
Should be next to the = button or under the numbers
It is actually for a fraction sign.
