Write an equation that could be used to find the value of b.

b = 1.88 units

Step-by-step explanation:

From the law of cosine

b² = a² + c² - 2ac cos B

Now we plug in the values of a = 2, c = 3 and ∠8 = 38°

b² = 2² + 3² - 2 × 2 × 3 cos 38°

b² = 4 + 9 - 12 (0.78801)

   = 13 - 9.456

   = 3.5438

b =

   = 1.88 units

Therefore, b = 1.88 units

true !

step-by-step explanation:

i believe the answer is the polygon, heptagon.