# trigonometric functions

#1
6 April, 2017 - 02:27

#### trigonometric functions

I memorize sin(1°) to sin(89°) in 1° step range. (four decimal accuracy)

This is a very easy way to calculate angles for decimals.

sin(52.853°) ≈ sin(53°) + [sin(53°) - sin(52°)] x (-0.147)

sin(52.853°) ≈ 0.7986 - 0.0016 = 0.797

Here is the error chart from sin(0.01°) to sin(89.99°). The maximal deviation is 0.00012278 at sin(50.59°).

ynnad