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trigonometric symmetry wrong #170

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rwst opened this issue Apr 6, 2016 · 1 comment

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bug

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rwst commented Apr 6, 2016

Somewhere after 0.6.4 crept in:

sage: sin(104/105*pi)
sin(1/105*pi)
sage: sin(-104/105*pi)
sin(1/105*pi)
sage: cos(104/105*pi)
-cos(1/105*pi)
sage: cos(-104/105*pi)
cos(1/105*pi)
sage: sin(1/105*pi)
sin(1/105*pi)
sage: sin(-1/105*pi)
sin(1/105*pi)
sage: sin(-1)
-sin(1)
sage: cos(-1)
cos(1)

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rwst mentioned this issue

implemented reflection at pi/2 -(ref #168) #169

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aaditya-thakkar mentioned this issue

fix for trigonometric symmetries of negative rational multiples of pi #171

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aaditya-thakkar commented Apr 7, 2016

@rwst, I have created a PR #171 regarding this, please have a look. :)

rwst closed this as completed in

c7da4da

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