What is the general solution for solvefor x,cos(2x)+2/(cos(2x))+3=0 ?

The general solution for solvefor x,cos(2x)+2/(cos(2x))+3=0 is x= pi/2+pin

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solvefor x,cos(2x)+2/(cos(2x))+3=0

solve for

x, cos (2 x) + \frac{2}{cos ( 2 x )} + 3 = 0

x = \frac{π}{2} + πn

Solution steps

cos (2 x) + \frac{2}{cos ( 2 x )} + 3 = 0

Solve by substitution

cos (2 x) = - 1, cos (2 x) = - 2

cos (2 x) = - 1 : x = \frac{π}{2} + πn

cos (2 x) = - 2 :

No Solution

Combine all the solutions

x = \frac{π}{2} + πn

sin (t) = \frac{250}{25 0 ^{2} + 30 0 ^{2}}

0 = sin (13 x)

cos (a) = \frac{9}{41}

sin^{2} (θ) - 2 = cos^{2} (θ)

cos (x) = 0, 88

What is the general solution for solvefor x,cos(2x)+2/(cos(2x))+3=0 ?
The general solution for solvefor x,cos(2x)+2/(cos(2x))+3=0 is x= pi/2+pin