Grazes 2 years ago Where 0<=x<360, Solve the equation. 3sec(x)-8=0

1. geerky42

$3\sec x = 8$$\sec x = \dfrac{8}{3}$$\dfrac{1}{\cos x} = \dfrac{8}{3}$$\cos x = \dfrac{3}{8}$

2. Grazes

If x={68,292}, is there any way to do it without a calculator?

3. tkhunny

Well, you CAN construct a 17-gon with a straight edge and compass, but why? Use the calculator. Note: Are you SURE you want to go with no decimal places?