1 1 secx – tanx SInX – – secx 3 sec8sin8 tan8 cot8 sin' 8 5 cos ' Y sinPDF 檔案Trig Prove each identity;Formules de trigonométrie Les formules de trigonométrie sont essentielles quel que soit le niveau (au collège en 3ème, au lycée en 1ère ou Terminale, ou encore dans le supérieur en prépa ou en MPSI), mais un rappel complet n'est pas superflu
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Pi/2 can be written as 90 degrees Sin(90theta) lies in the 2nd quadrant where the Sines before conversion remain positive and since the value is changing through a multiple of 90 degrees, the trigonometric function will change Hence, Sin(90theZ π 2 0 cos2θ dθ 23 Z π 2 0 cos2θ dθ correct 33 Z π 2 0 cosθ dθ 43 Z π 0 cos2θ dθ 53 Z π 0 cosθ dθ Explanation r = 2cosθ and r = cosθ intersect atθ = π 2 Because of symmetry with respect to the xaxis, A 2 = 1 2 Z π 2 0 4cos2θ dθ − 1 2 Z π 2 0 cos2θ dθ A = 3 Z π 2 0 cos2θ dθ CalC11d01b 005 100points The1) Amy and Dex 2) Beth and Carl 3) Carl and Amy 4) Dex and Beth 2 A circle with a diameter of 10 cm and a central angle of 30° is drawn below What is the area, to the nearest tenth of a square
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Solve your math problems using our free math solver with stepbystep solutions Our math solver supports basic math, prealgebra, algebra, trigonometry, calculus and moreEstablish the identity (1 sin^2(x))(1 tan^2(x)) = 1Free math lessons and math homework help from basic math to algebra, geometry and beyond Students, teachers, parents, and everyone can find solutions to their math problems instantly
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We note that there are point, x1 and x2 with x1 ≠ x2 and f (x1) = f (x2), for instance, if we take x1 = 2 and x2 = 1/2, then we have f (x1) =2/5 and f (x2) =2/5 but 2 ≠ 1/2 Hence f is not oneone Also, f is not onto for if so then for 1∈R ∃ x ∈ R such that f (x) = 1 which gives x/ (x21) =1The function f R → R defined by f(x) = 2x 1 is surjective (and even bijective), because for every real number y, we have an x such that f(x) = y such an appropriate x is (y − 1)/2 The function f R → R defined by f(x) = x 3 − 3x is surjective, because the preimage of any real number y is the solution set of the cubic polynomialIs x^3 x onetoone and onto?
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Elaborating x 3 y 3 using identity a 3 b 3 = (a b)(a 2 ab b 2) = x ( x y)(x 2 xy y 2) 3xy (x y ) Taking common x( x y ) in both the terms = x ( x y){x 2 xy y 2 3y} ∴ x (x 3 y 3) 3xy ( x y) = x ( x y )(x 2 xy y 2 3y)See the answer See the answer See the answer done loading Show transcribed image text Expert Answer Who are the experts?Factorise (X Y)3 8x3 CISCE ICSE Class 9 Question Papers 10 Textbook Solutions Important Solutions 5 Question Bank Solutions Concept Notes & Videos 242 Syllabus Advertisement Remove all ads Factorise (X Y)3 8x3 Mathematics
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