(sin 50. sin 55. sin 65)/(cos 145. cos 140. cos 155)=...
Saluranedukasion 2024-04-07T11:46:43
(sin 50. sin 55. sin 65)/(cos 145. cos 140. cos 155)=...
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(sin 50. sin 55. sin 65)/(cos 145. cos 140. cos 155)=...