trigonometric functions

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#1 6 April, 2017 - 02:27
Joined: 1 year 3 months ago

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°).



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