Tolong akuuu no 2 Kakak kakak yg baik, tolong yaaa... Jangan asal yaaa

cosx / 1-sinx - cosx / 1+sinx = 2tanx

cosx (1 + sinx) - cosx (1 - sinx) / (1 - sinx)(1 + sinx) = 2tanx

cosx ((1+sinx) - (1-sinx)) / 1 - sin²x = 2 tanx

cosx (1 + sinx - 1 + sinx) / cos²x = 2 tanx

sinx + sinx / cosx = 2 tanx

2sinx / cosx = 2tanx

2 ( sinx/cosx) = 2 tanx
2 tanx = 2 tanx