
(tan ^ 2x) / (secx-1) -1 = secx를 어떻게 확인합니까?

"왼쪽 손 사이드"= tan ^ 2x / (secx-1) -1 cos ^ 2x + sin ^ 2x = 1 => 1 + tan ^ 2x = sec ^ 2x => tan ^ 2x = sec ^ 2x (secx-1) -1 (= (secx-1)) -1 => "왼손잡이 측"= (sec ^ 2x-1) / (secx- => secx + 1-1 = 색상 (파란색) secx = "오른손 쪽"