Trigonometry

Sep 24, 2009 · cos(A+B) = cosA cos B – sinA sinB cos(A-B) = cosA cos B + sinA sinB. tan(A+B) = tan(A-B) = 13. Double-Angle Formulas: sin 2( = 2 sin( cos(cos 2( = cos2( - sin2(or = 1- 2sin2(or = 2cos2( - 1. tan 2( = 14. Half-Angle Formulas: or = 15. Inverse Functions: “The fat man in his . cos. y . sec. ure . cot ” y= Sin-1(x) ( Arcsin(x) where ................
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