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why simulink gives wrong answer of trigonometery

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mahmood hassan
mahmood hassan 2018-1-28
评论： Star Strider 2018-1-29
Kindly guide me when I am doing trigonometry operation by Simulink why it gives the wrong result for sin(pi), sin(2pi) and cos(pi/2)

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Star Strider
Star Strider 2018-1-28
It seems that you are seeing floating-point approximation error.
See Why is 0.3 - 0.2 - 0.1 (or similar) not equal to zero? (link) for a comprehensive discussion.
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