tolong batu jawab pliss...

lim (x--->45°) (1 - tan x) / (sin x - cos x)
= lim (x--->45°) (cos x - sin x) / -cos x (cos x - sin x)
= lim (x --->45°) -1/cos x
= -1/cos 45
= -2/√2
= -√2

Opsi : B

smoga membantush_!

#sameanswer, differentway, nocopas