Answer:
cos(C)
Step-by-step explanation:
Recall that the sine ratio is opposite over hypotenuse.
[tex] \sin(A) = \frac{BC}{AC} [/tex]
Also the cosine ratio is adjacent over hypotenuse.
[tex]\cos(C) = \frac{BC}{AC} [/tex]
The tangent ratio does not come close because it doesn't involve the Hypotenuse.
[tex] \therefore \sin(A)=\cos(C)[/tex]
