Ask a New Question

Asked by Sean

Find the exact solutions to each equation for the interval [0,360)

2cosx-secx = 1
17 years ago

Answers

Answered by Reiny
2 cosx - 1/cosx = 1
(2cos^2 x - 1)cosx = 1
2cos^2 x - 1 = cosx
2cos^2 x - cosx - 1 = 0
(2cosx + 1)(cosx-1) = 0
cosx = -1/2 or cosx = 1
x = 120º, 240º,0º,360º
17 years ago
There are no AI answers yet. The ability to request AI answers is coming soon!

Related Questions

Find all exact solutions to 7sin2x=14sinx on [0,2π). Find all exact solutions to cos4θ=cos2θ on [0,π). find the exact solutions to x^2-3x+1=0 by using the quadratic formula Find the exact solutions to ​f(x)equals0 in the complex numbers and confirm that the solutions are n... Find the exact solutions to the equation n - 3/4 * x ^ 2 + 3x = - 9 Select all that apply. x = - 6... Find the exact solutions to ​f(x)equals=0 in the complex numbers and confirm that the solutions are... Find the exact solutions to the quadratic equation in the complex numbers. (x-13)²=-36 HELP ME P... Find the exact solutions to the quadratic equation in the complex numbers. (x-13)²=-36 Find the exact solutions to 6x^2+x+4=0 by using the quadratic formula. x=-b+-sqrtb^2-4ac/2a -1+-... Find the exact solutions of the systems of equation x^2+2y^2=18 and x=2y
Ask a New Question
Archives Contact Us Privacy Policy Terms of Use