Tan(3π/2) ve tan(3π/4) aynı değerler değildir. - Tan(3π/2)'nin değeri tanımsızdır çünkü bu açı, tanjant fonksiyonunun tanımsız olduğu üçüncü kadranda yer alır. - Tan(3π/4)'ün değeri ise -1'dir ve bu, 135° açısına karşılık gelir.
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