Tanx cotx tanx cotx 2 cos 2x
[DOC File]CBSE CLASS XII MATHS
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Integral Calculus. Two mark questions with answers. Q1. dx Ans1. dx = dx = dx = dx = (sec2x + secx tanx) dx = tanx + secx + c Q2. Ans2. = dx = dx = dx = c = c Q3. 3 cotx - 2 tanx)2 dx Ans3. (3 cotx - 2 tanx)2 dx = (9 cot2x + 4 tan2x - 12) dx = [9(cosec2x - 1) + 4(sec2 x - 1) - 12] dx = (4 sec2x + 9 cosec2x - 25) dx = 4 tanx - 9 cotx - 25x + c Q4. dx Ans4. dx = dx = dx = = + c Q5. (1 - sinx) dx ...
[DOCX File]PRACTICE ASSIGNMENT CLASS: XI SUB. MATHEMATICS
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2 = 10(1+i) Q9. If Z. 1 = 2-i and Z. 2 = 1+i , find the value of (a) ...
[DOC File]A Level Mathematics Questionbanks
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[2] b) cos75ocos15o sin75osin15o [2] c) [2] d) 2sin75ocos75o [2] e) cos215o – sin215o [2] Give your answers in surd form where appropriate 7. Solve. a) 6sinx cosx + cosx = 0 0o
[DOCX File]HISTORY - Kendriya Vidyalaya Sector 8 - RK Puram New Delhi ...
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tanx tan x+ π 3 + tan x+ π 3 tan x- π 3 + tan x- π 3 tanx=-3 . 4.)(i) If . cotx coty=2 , show that cos x+y cos x-y = 1 3 . (ii)If tan A = m.tan B, prove that . sin A-B sin A+B = m-1 m+1 .5.) Prove that: (i) cos 4x=1-8 cos 2 x+8 cos 4 x (ii) sin 4x=4 sin x x cos 3 x-4 cosx sin 3 x (iii) sin 5x=5 sin x -20 sin 3 x+16 sin 5 x
[DOC File]A Level Mathematics Questionbanks
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a) 2sinx cosx = sinx B1. sinx (2cosx 1) = 0 M1 A1. sinx = 0 or cosx = x = 0, 180, 60, 300 A3 (-1 eeoo)
[DOC File]CBSE CLASS XII MATHS
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Title: CBSE CLASS XII MATHS Author: Apple Last modified by: Apple Created Date: 3/26/2008 7:21:00 AM Other titles: CBSE CLASS XII MATHS
[DOC File]BAB III 78-jkt.sch.id
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sinx + cosx = 1 ; tanx + 1 = secx ; cotx + 1 = cosecx . cos 2x = 2 cos -1 = 1 - 2 sinx. sin 2x = 2 sinx cosx. sehingga soal menjadi bentuk persamaan kuadrat atau bentuk pemfaktoran. Contoh : Tentukan himpunan penyelesaian dari : 1. cos 2x – 3 cos x + 2 = 0; 0 < x < 360. Jawab : 2. sin 4x – 2cos 2x. sin x = 0 ; 0 < x < 180. jawab :
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