# Trigonometry

posted by
**Cynthia**
.

Solve tan2 x + tan x – 1 = 0 for the principal value(s) to two

decimal places.

Please Explain

posted by
**Cynthia**
.

Solve tan2 x + tan x – 1 = 0 for the principal value(s) to two

decimal places.

Please Explain