Solve the equation \(\sec x = 5\), giving all the values of \(x\) in the interval \(0 \leqslant x \leqslant 2 \pi\) in radians to two decimal places.
Show that the equation \(\tan ^ { 2 } x = 3 \sec x + 9\) can be written as
$$\sec ^ { 2 } x - 3 \sec x - 10 = 0$$
Solve the equation \(\tan ^ { 2 } x = 3 \sec x + 9\), giving all the values of \(x\) in the interval \(0 \leqslant x \leqslant 2 \pi\) in radians to two decimal places.