How to solve 3 sin^(2)x = cos^(2)x
3sin²(x) = cos²(x) cos²(x) cos²(x) 3tan²(x) = 1 3 3 tan²(x) = ¹/₃ tan(x) = ¹/₃√3tan⁻¹[tan(x)] = tan⁻¹(¹/₃√3) x = 30°, 150° x = ¹/₆π radians, ⁵/₆π radians
