Trigonometric Ratios: Hand Trick

The six trigonometric ratios relate the sides of a right triangle to its angles. Specifically, they are ratios of two sides of a right triangle and a related angle. Here are the formulas for these six trig ratios:

  

All the trigonometric ratios for angle with measures 0°, 30°, 45°, 60° and 90° are provided in the following table:

Having a hard a time memorizing the trigonometric ratios table? Well, no more. Say goodbye to memorization and say hello to your HAND. Here are two MATHEMATIPs on how to get the trigonometric ratios of special triangles without having to use a calculator or cracking every neuron that your brain has. Remember, ESCAPE THE COMPLEX.

TRIGONOMETRIC RATIOS: HAND TRICK

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https://www.youtube.com/watch?v=jI81WXyFrL0

If the angles are in radian measures, this is how you do it.