Question

Need help?

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Answer 1

i do not know the answer but all of the sides total should equal 180 degrees for you to have the right answer

Answer 2

I assume you are learning trigonometry of right triangles.
Is that correct?

Answer 3

yes

Answer 4

Do you need help, or did you figure it out?

Answer 5

Cos (40 deg) = AC / AB
AC = AB * Cos (40 deg)
AC = 3 * 0.766
AC = 2.30 cm

is this correct?

Answer 6

I would say yes you are correct.

Answer 7

Correct.
Good work!