Question

For ΔABC, which one is equivalent to sin(A)?

cos(B)
sin(B)
cos(C)
tan(C)

Answer 1

TH ANSWER IS C ON EDGEN.

Explanation:

C. cos(C)

Answer 2

cos(C)

Explanation:

Recall that the sine ratio is opposite over hypotenuse.

`\sin(A) = (BC)/(AC)`

Also the cosine ratio is adjacent over hypotenuse.

`\cos(C) = (BC)/(AC)`

The tangent ratio does not come close because it doesn't involve the Hypotenuse.

`\therefore \sin(A)=\cos(C)`