Respuesta :

Answer: x=9

Step-by-step explanation:sin and cos are like complementary angles. They add up to 90 degrees. Using this formula sin x= cos y, where  x+y=90 so we st the angle measure equal to 90 degrees . 5x+4= x+32=90 ⇒6x+36=90⇒6x=54, x=9

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