What does a 72 degree angle look like?

1 Answer
DragonPi · Soumalya Pramanik
May 27, 2018

Use a protractor, or draw a picture using known angles

Explanation:

  1. Draw a graph. The Y axis is at a 90 degree angle to the x axis
    graph{ [-1, 10, -1, 5]}
  2. half of a 90 degree angle is a 45 degree angle
    graph{x [-1, 10, -1, 5]}
  3. halfway between a 90 degree angle and a 45 degree angle is a 67.5 degree angle graph{2x [-1, 10, -1, 5]}
  4. 72 degrees should be slightly above (steeper than) this angle

You can also use a protractor for more accurate measurement.

And, Here is the accurate graph for #72^@# angle in graph.

graph{y= (tan (2pi/5))x [-14.13, 17.9, -6.65, 9.37]}

Just graph the equation #y = (tan ((2pi)/5))x# to get the result. The angle made by the graph on the positive side of #x#-axis is #72^@#.

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