Question

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

Answer 1

b=b.

Answer 2

Answer choices .

38 ^2 = 2^2 + 3^2 – 2(2)(3)(cos b°)
b^2 = 2^2 + 3^2 – 2(2)(3)(cos 38°)
2^2 = b^2 + 3^2 – 2(b)(3)(cos 38°)
3^2 = 2^2 + b^2 – 2(2)(b)(cos 38°)

Answer 3

Cosine rule. What do you think?

Answer 4

@Directrix