Tìm sai số khi giải gần đúng phương trình cos(x) = -1/2.

Jan 11, 2024 ... Use the given information to cos(x - y).cos x = 2/9, sin y = -1/2, x in quadrant IV, y in quadrant III. The period of the cos(x) cos ( x ) function is 2π 2 π so values will repeat every 2π 2 π radians in both directions. Aug 21, 2018 ... KCET 2013: If sin x- sin y = (1/2) and cos x- cos y = 1, then tan(x + y) is equal to (A) (3/8) (B) -(3/8) (C) (4/3) (D) - (4/3). May 9, 2023 ... ggets the minimum. θ _min=26-1.118=24.882°C (C) when t=0 -8+0.464=-7.536>- 5/2 π So ... ... .,-2,-1,0,1,2,... Arccos calculator ▻. Cosine table. x. (deg). x. (rad). cos x. 180°, π, -1. 150°, 5π/6, -√3/2. 135°, 3π/4, -√2/2. 120°, 2π/3, -1/2. 90°, π/2, 0. Graph · x− x −6=0 · − x +3>2 x +1 · line (1, 2), (3, 1) · f ( x )= x · prove tan( x )−sin( x )=tan( x )sin( x ) · d dx (3 x +92− x ) · (sin( θ ))′ · sin(120) ... Problems for 1–2-Years Students. 1. Prove that cos x < e. −x2/2 for all 0 < x ≤ π. 2. It is allowed to replace a polynomial p(x) with one of the polynomials ... Dec 5, 2012 ... Решите уравнение cos x=-1/2 · Ответ, проверенный экспертом · Новые вопросы в Геометрия. Накресли прямокутник ABCD зі сторонами 3 см і 4см . Mar 2, 2022 ... cosx/sinx = (-1/2)/(1/2)sqr3 = (-1/2)(2/sqr3) = -1/sqr3 =-sqr3/3. cosx/sinx = -(1/3)sqr3 = about (-1/3)(1.732) = -1.732/3 = -0.577. or. cosx ... Apr 4, 2009 ... Since x = (1/2)(2x) = (2)(x/2), then you can restate the equation in terms only of sin ( 2 x ) , and then solve the resulting quadratic.