The answer is 39 degrees <span />
Gross pay is total pay before deductions. net pay is total pay after deductions.
We can simply add the expression to simplify the expression. So,
(7+3i)+(-8+9i) =7 +3i -8+9i Get rid of paranthesis.
=(7-8)+(3i+9i) Group the like terms.
= -1 + 12i