1 / (sec x + tan x) + 1 / (sec x - tan x) = 2 sec x
1 / ((1/cos x) + (sin x/cos x)) + 1 / ((1/cos x) - (sin x / cos x)) = 2/cosx
cosx + cosx/sinx + cosx - cosx/sinx = 2/cosx
2cosx = 2/cosx
i don't know where to go from here. did i make a mistake somewhere?
1 / ((1/cos x) + (sin x/cos x)) + 1 / ((1/cos x) - (sin x / cos x)) = 2/cosx
cosx + cosx/sinx + cosx - cosx/sinx = 2/cosx
2cosx = 2/cosx
i don't know where to go from here. did i make a mistake somewhere?