 2cos 2x 3cosx 0. Sin2x cos2x. 2cos 2x 3cosx 0. 3 3cosx 2sin 2x. Cos2x-5 корень из 2 cosx-5 0. |  Cos2x+3sinx-2 0. 2cos 2x 3cosx 0. Cos2x+cos3x. Cos в квадрате x-2 cos x-3=0. Cos 5x=корень 2/2. |
%2B3cosx%3D0%5C%5C2-2cos%5E2x%2B3cosx%3D0%5C%5C2cos%5E2x-3cosx-2%3D0%2C%5C%2C%5C%2C%5C%2C%5Cboxed%7Bcosx%3Da%2C%7Ca%7C%5Cleq1%7D%5C%5C2a%5E2-3a-2%3D0%5C%5CD%3D9-4*2*(-2)%3D9%2B16%3D25%5C%5Ca_1%3D%20%5Cfrac%7B3-5%7D%7B2%7D%20%3D-1%5C%5Ca_2%3D%20%5Cfrac%7B3%2B5%7D%7B2%7D%3D4%2C%5C%2C%5C%2C%5C%2Ca_2%5Cneq%20%20cosx%5C%5Ccosx%3D-1%5C%5Cx%3D%5Cpi%2B2%5Cpi%20k%2Ck%5Cin%20z "8sin2x+cosx+1 0 решение уравнения. Cos2x-3cos(-x)+2. Cos2x корень из 2 sin pi/2+x +1 0. Cos(x+п/4)=-1/2. Cos2x+3cosx-1 0.") 8sin2x+cosx+1 0 решение уравнения. Cos2x-3cos(-x)+2. Cos2x корень из 2 sin pi/2+x +1 0. Cos(x+п/4)=-1/2. Cos2x+3cosx-1 0. |  Cos2x-3cosx+2 0. Sin 2x − 2 cos x + √ 2 sin x − √ 2 = 0. Решить уравнение 2cos2x 3sinx-3=0. 2cos 2x 3cosx 0. 2cos 2x 3cosx 0. |
 Csc 2 ( x ). 2cos 2x 3cosx 0. Sin2x-cos3x=0. Sin2x cos2x решение. 2sin2x+3cosx 0. |  2cos 2x 3cosx 0. 2cos 2x 3cosx 0. Cos. 5-cosx-cos2x=0. Cos2x. |
 Cos 2 x 3 sin x 3+1 0. Cos^4 3x+cos^4(3x-п/4)=1/4. 2cos 2x 3cosx 0. Cos2x/2-sin2x/2. Формулы преобразования cos2x. |  Cos2x +3sinx -3 0 решить уравнение. 2cosx+1=0. 2cos 2x 3cosx 0. Cos2x-3cosx+2 0. 5-2cosx 5 корень из 2 sin x/2. |
 6cos2x-5cosx+1=0. 2cos2x. 2cos 2x 3cosx 0. Решение уравнения cos x 0. Уравнение cos2x=-cosx. |  2cos 2x 3cosx 0. Cos(3x + п/4) = 0. Cos2x=2cos^2x-1. 4cos2x+3sin2x-5 = 0. Cos2x-5√2cosx-5=0. |
 2cos(x/2+п/4)<1. Cos x=-0,6. Sin2x корень из 3 cos2x 2cos6x. 2sin2x+3cosx-3 0. Cos2x. |  Cos x 3/2. 2cos 2x 3cosx 0. 3sin2x-2cosx+2=0. Cosx+cos2x+cos3x 0. Cos2x. |
 Cosx+cos3x=cos2x. Cos3x cosx 4cos2x решить уравнение. Cos4x-sin2x. 2cos 2x 3cosx 0. Cos6x+2cos2x 0. |  Sin2x+2sinxcosx-3cos2x 0. 2cos 2x 3cosx 0. 2cos^2x-cosx-1=0. Cos2x+3cosx-1 0. 2cos 2x 3cosx 0. |
 Cos 3/2. 2sin 7pi 2 x sinx корень из 3 cosx. Cosx=cos3x. 2cos2x-cosx-1 0 решение. 2 sin^2 x - sin x/ 2cos x - 3. |  Cos2x-3cos(-x)+2=0. Cosx cos3x решите уравнение. 2cos 2x 3cosx 0. 2cos 2x 3cosx 0. Cosx cos3x cos4x. |
 2sin2x+3cosx 0 решение. 2cos 2x 3cosx 0. 2cos 2x 3cosx 0. 2cos2x-cosx-1 0 решение. Sin 2x − 2 cos x + √ 2 sin x − √ 2 = 0. |  Cos2x. Cos(x+п/4)=-1/2. 2cos 2x 3cosx 0. 2cos 2x 3cosx 0. 2cos 2x 3cosx 0. |
 6cos2x-5cosx+1=0. Cos(x+п/4)=-1/2. Sin 2x − 2 cos x + √ 2 sin x − √ 2 = 0. Cos x 3/2. Cos2x/2-sin2x/2. |  Sin2x cos2x решение. 5-2cosx 5 корень из 2 sin x/2. Cos2x=2cos^2x-1. 2cos 2x 3cosx 0. 2cos2x-cosx-1 0 решение. |
