# Pre-Calc Help

posted by
**Daniel**
.

Evaluate the expression under the given conditions. (show work please)

sin(A-B); tan A=12/5, A in quadrant 3, sinB=-3sqrt(10)/10, B in quadrant 4.

posted by
**Daniel**
.

Evaluate the expression under the given conditions. (show work please)

sin(A-B); tan A=12/5, A in quadrant 3, sinB=-3sqrt(10)/10, B in quadrant 4.