Register Now

Login

Lost Password

Lost your password? Please enter your email address. You will receive a link and will create a new password via email.

222-9+11+12:2*14+14 = ? ( )

Toán Lớp 11: 4tan2x-6tanx-10=0. Ai giúp tui làm bài này đy

Toán Lớp 11: 4tan2x-6tanx-10=0. Ai giúp tui làm bài này đy

Comments ( 1 )

  1. $4tan^2x-6tanx-10=0$
    $⇔tanx=-1⇔x=\dfrac{-\pi}{4}+k\pi(k∈Z)$
    $tanx=\dfrac{5}{2}⇔x=arctan\bigg(\dfrac{5}{2}\bigg)+k\pi(k∈Z)$
     

Leave a reply

222-9+11+12:2*14+14 = ? ( )