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[DOC File]ADDITION AND SUBTRACTION FORMULAS
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sin = sincos + cos sin. sin = sin cos - cossin cos = coscos - sin sin cos = coscos + sinsin . tan = tan = SPECIAL ANGLES 2nd 3rd 4th 120 ___ ___ 135 ___ ___ 150 ___ ___ 180 ___ ___ COMBINATIONS. 15 = 345 = 255 = = EXAMPLES. Evaluate each expression. 1) sin 75. sin (45 + 30) sin(120 – 45) 2) cos 345. 3) tan
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[DOC File]FUNDAMENTAL TRIG IDENTITIES
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Sep 24, 2009 · sin(A+B) = sinA cosB + sinB cosA sin(A-B) = sinA cosB - sinB cosA. 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 ...
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[DOC File]Trigonometry
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sin (2x) = 2 sin x cos x cos (2x) = cos2 x - sin2 x = 2cos2 x - 1 = 1 - 2sin2 x. (shift identities) sin(-x) = -sin(x), tan(-x) = -tan(x) (sine and tangent are odd functions) cos(-x) = cos(x) (cosine is an even function) (half-angle formulas) Half-angle formulas, sum/difference formulas and product to sum formulas will be given in the test.
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[DOC File]TRIGONOMETRY
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Fundamental Identities. cos2 ( + sin2 ( = 1. 1 + tan2 ( = sec2 (1 + cot2 ( = csc2 (sin ( = − sin(−() csc ( = − csc(−() cos ( = cos(−() sec ( = sec(−()
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[DOC File]Trigonometric Formulas - Arizona State University
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cos ( u – v ) = cos u cos v + sin u sin v. tan ( u + v ) = tan ( u – v ) = Double Angle Formulas Half-angle Formulas. sin 2u = 2 sin u cos u. cos 2u = cos2 u – sin2 u = 2cos2 u – 1 = 1 – 2sin2 u. tan 2u = Title: FUNDAMENTAL TRIG IDENTITIES Author: Mike Brown Last modified by:
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[DOC File]Basic Trigonometric Identities
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sin (2x) = 2 sin x cos x. cos (2x) = cos2 x - sin2 x = 2cos2 x - 1 = 1 - 2sin2 x. (shift identities) sin(-x) = -sin(x), tan(-x) = -tan(x) (sine and tangent are odd functions) cos(-x) = cos(x) (cosine is an even function) Right Triangles: "Soh-Cah-Toa". Remember, csc x = …
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Sin, Cos and Tan - Maths GCSE Revision
sin = sincos + cos sin. sin = sin cos - cossin. cos = coscos - sin sin. cos = coscos + sinsin . tan = tan = COMBINATIONS. 15 = 345 = 255 = 75 = EXAMPLES. Evaluate each expression. 1) sin 75. 2) cos 345. 3) tan 165. Simplify the following: 4) cos (270 - x) 5) sin ( x + ) = 6) cos ( ) Find each of the following numbers , please.
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Formulas for sin cos and tan