cos 22x cos2x 3 4 0 H ng ng y m c n c c a con k nh l n xu ng theo th y tri u s u c a m c n c trong k nh t nh theo th i gian t h c cho b i c ng th c h 3 cos t 6 3 12 Khi n o m c
Use inverse trigonometric functions to find the solutions and check for extraneous solutions A basic trigonometric equation has the form sin x a cos x a tan x a cot x a The Solve the equation cos2x cos22x cos23x 1 IMO 1962 4 My first attempt in solving the problem is to simplify the equation and express all terms in terms of cosx Even
cos 22x cos2x 3 4 0
cos 22x cos2x 3 4 0
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Nilai Lim X 0 1 cos2x 1 cos 4x
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Cos 2x sin 2x sin 2 3 1 4cos 8x 3 2
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cos 2 x 2 cos 2x 1 2 4 cos 3 x 3 cos x 2 1 Simplify the equation to get cos 2 x 8 cos 4 x 10 cos 2 x 3 0 Hope this will help Explanation Here cos2x 3 4 cosx 3 2 If cosx a a 1 then the general solution of eqn is x 2k k Z and arccos a i cosx 3 2 0 arccos 3 2
Online math solver with free step by step solutions to algebra calculus and other math problems Get help on the web or with our math app Solve cos 2 x 3 4 Ans pi 6 and 5pi 6 cos 2 x 3 4 cos x sqrt3 2 a cos x sqrt3 2 arc x pi 6 b cos x sqrt3 2 arc x 5pi 6
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cos 22x cos2x 3 4 0 - To solve a trig equation transform it into one or many basic trig equations Solving a trig equation finally results in solving various basic trig equations There are 4 main basic trig