cld.pt · sena cosb + senb cos (a + b) = cosa cosb — sena tga + tg b tg (a + b) = 1 — tg a .tgb...

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Transcript of cld.pt · sena cosb + senb cos (a + b) = cosa cosb — sena tga + tg b tg (a + b) = 1 — tg a .tgb...