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değerini alır**, çünkü:\n\n1. 135 derece, 90 ile 180 derece arasında yer alır ve bu nedenle **II. quadrant**'ta bulunur [```3```](https://www.mathcelebrity.com/anglebasic.php?entry=135&pl=tan).\n2. II. quadrant'ta sinüs fonksiyonu pozitiftir [```3```](https://www.mathcelebrity.com/anglebasic.php?entry=135&pl=tan).\n3. 135 derece, 45 dereceden büyük olduğu için **obtuse açı** olarak kabul edilir [```3```](https://www.mathcelebrity.com/anglebasic.php?entry=135&pl=tan).\n4. 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