Trigonometry - verify identity:
cos (x - y) / sin (x + y) = 1 + cotxcoty / cotx + coty...
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Mathematics, 18.11.2019 20:31 Davidbg23
Trigonometry - verify identity:
cos (x - y) / sin (x + y) = 1 + cotxcoty / cotx + coty
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Answers: 2
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