Find the limit lim x = pi/4 of (sin x - cos x) / cos 2x

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Find the limit lim x = pi/4 of (sin x - cos x) / cos 2x
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You can simplify the fraction (sin(x) - cos(x)) / (cos(x) - sin(x)) to -1 because sine and cosine are shifted by 90 degrees (or π/2 radians) relative to each other. This results in equivalent expressions, allowing you to cancel out the common terms and obtain -1. (For anyone who wonder where did the -1 come from)

Aloe
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Please where negative -1 come from you make cancellation

aqoonguud
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Tentukan nilai limit berikut : lim
𝑥→
𝜋
4
1−sin 𝑥
1+𝑐𝑜𝑡𝑎𝑛 𝑥

silvynuraini
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Eso tiene que estar mal, como vas a agregar ese -sin²x en el denominador de la nada, tiene que agregarse en el numerador también

Jonathan-dwbs