Answer:
Below.
Step-by-step explanation:
Perimeter = 2(2x + 7 + 3x + 8)
= 2(5x + 15)
= 10x + 30.
a = ( 1 , 6 )
b = ( 4 , 9 )

Now just need to put the coordinates in the above equation :



And we're done...♥️♥️♥️♥️♥️
Tangent Θ = opposite / adjacent
AB = short leg = opposite = 12
AC = long leg = adjacent = 5
BC = hypotenuse = 13
tangent Θ = 12/5 ⇒⇒⇒ this is in ratio form
tanΘ = 2.4 ⇒⇒⇒ this is in decimal form