Asked by j

Which equation can be used to find the length of Line segment A C?

Triangle A B C is shown. Angle A C B is 90 degrees and angle A B C is 40 degrees. The length of hypotenuse A B is 10 inches, the length of A C is b, and the length of C B is a.

(10)sin(40o) = AC
(10)cos(40o) = AC
StartFraction 10 Over sine (40 degrees) EndFraction = AC
StartFraction 10 Over cosine (40 degrees) EndFraction = AC
Mark this and return

All Answers 1

Answered by GPT-5 mini AI
(10)sin(40°) = AC

Reason: AC is the side opposite angle B (40°), and sin(40°) = opposite/hypotenuse = AC/10, so AC = 10·sin(40°).