[PDF] 7 4 study guide and intervention trigonometry answer key

  • Which one is the easy way to remember trigonometric?

    SOH-CAH-TOA
    Sine = Opposite ÷ Hypotenuse. Cosine = Adjacent ÷ Hypotenuse. Tangent = Opposite ÷ Adjacent. One way to remember the letters is to sound them out phonetically (i.e. /?so?k??to??/ SOH-k?-TOH-?, similar to Krakatoa).
  • Sin, cos, and tan are trigonometric ratios that relate the angles and sides of right triangles. Sin is the ratio of the opposite side to the hypotenuse, cos is the ratio of the adjacent side to the hypotenuse, and tan is the ratio of the opposite side to the adjacent side.
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