48 tan Sin 1 5 Cos 13 An identity used in the solution tanx

Last updated: 3/19/2023

48 tan Sin 1 5 Cos 13 An identity used in the solution tanx tany 1 tanxtany a tan x y b tan x y c tan x y d tan x y 1 tanxtany tanx tany tanx tany 1 tanxtany 1 tanxtany tanx tany