4sin 3x 3sinx 2cos2x 1 0
[DOC File]MA4. Koealue.
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98.1.3. Ratkaise yhtälö a) cos 3x = -1 b) sin 3x - sin 2x = 0. 98.1.4. Kolmion sivujen pituudet ovat 5, 6 ja . Laske pienin kulma ja alan tarkka arvo. 98.1.5. Määritä cos 2x, kun tan x = -½ ja kulma x on välillä [ ,2 ] 98.1.6. Jaa vektori 12i - 3j kahteen komponenttiin, joista toinen on vektorin 6i + 9j ja toinen vektorin i - …
[DOC File]ТЕСТЫ ПО КАЗАХСКОМУ ЯЗЫКУ 10 КЛАСС 1 ЧЕТВЕРТЬ …
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1) устный опрос — контроль, проводимый после изучения материала по одному или нескольким разделам дисциплины в виде ответов на вопросы и обсуждения ситуаций; ... С– 65-69 С 60-64 d+ 55 59 d 50 54 f 0-49 ...
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cot 2x(cot 2x–1)= 0 or cot 2x = 1 Attempt to factorise or solve a quadratic (See rules for factorising quadratics) or cancelling out cot 2x from both sides. dM1. cot 2x = 0 or cot 2x = 1 Both cot 2x = 0 and cot 2x = 1. A1. cot 2x = 0 (tan 2x→ ∞) 2x = 90, 270. Candidate attempts to divide at least one of their principal anglesby 2.
[DOC File]Урок 1, 2
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1) 3 – 3sin2x – 3cosx = 0 [cosx = 0 или cosx = 1; ]; 2) В.: стр. 297, №658 (3) и найдите корни этого уравнения, лежащие на [y = sinx; 4y3 – 4y2 – y + 1 = 0; y = 1 или y = (0,5; ; показать два способа: единичная окружность или двойные ...
[DOC File]高中ko講義數學(一)
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3. 若3sin2θ+2cos2θ=3,求tanθ之值。 解:設t=tanθ,則 sin2θ==,cos2θ== 故3sin2θ+2cos2θ=3化為 3×+2×=3 ( 5t2-6t+1=0 ( ( 5t-1 ) ( t-1 )=0 解得t=或1,即tanθ=或1 4. 設tanα,tanβ為方程式x2-3x-2=0的二根,求之值。
[DOC File]İZMİR FEN LİSESİ LİSE 1 MATEMATİK
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09. cosx+2cos2x+cos3x ifadesini çarpım şekline dönüştürünüz. 10. x bir açı olmak üzere tgx =ctgx –2ctg2x olduğunu ispatlayınız. Buradan hareketle
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