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Mathematics, 05.02.2020 01:44 sabrinarasull1pe6s61

Verify each identity:

(tan x + tan y) / (1 - tan x tan y) = (sin x cos y + cos x sin y) / (cos x cos y - sin x sin y)

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Verify each identity:

(tan x + tan y) / (1 - tan x tan y) = (sin x cos y + cos x sin y...
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