• Divide the length of the hypotenuse by the opposing side.
  • If you know the lengths of the three sides of the triangle, the sine of angle X is the ratio of the length of the triangle leg opposite angle X to the length of the hypotenuse.
  • if i remember it correctly, right angle has a 90 degree angle and that is a constant with sin 0. hehehe...
  • The sine is the side opposite the angle divided by the hypotenuse of the triangle.
  • Opposite side divided by hypotenuse.
  • 6-17-2017 Trigonometry is based on a picture of a circle with the radius making an angle with the x axis. You carry this picture in your head, not your calculator. Trig is mostly imagination and the rest memorization. Remember Chief SohCahToa -- Sin = Opposite/Hypotenuse -- Cosine = adjacent/Hypotenuse -- Tangent = Opposite/Adjacent -- Also memorize -- Sec = 1/Cos -- Csc = 1/Sin -- Cot = 1/Tan

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