Hello, weasley74!
Find solutions to: .Code:* * * * 3x* c * * * * a * * * 4x * * * * * * * * * b
We see that: .
. . and that and are complementary.
In general: .
Therefore: .
Another way of doing the question (which is how I picked up the missing solution):
Since (supplementary angle formula), the equation can be re-written as: .
Case 1: (where n = -m) and you have the solutions given by Soroban. Note that these solutions include .
Case 2: Since it can also be said that
.