i need help for a couple of questions.
1. tan 2x = 1 (-180 degrees (lessthanorequalto) x (lessthanorequalto) 180 degrees)
2. 2sin^2 3x = 1 (-180 degrees (lessthanorequalto) x (lessthanorequalto) 180 degrees)
3. tan x + 1 = 0 (-180 degrees (lessthanorequalto) x (lessthanorequalto) 180 degrees)...