What is the minimum value of -LSB- math -RSB- \ cos x + \ cos 2x -LSB- / math -RSB- for all values of -LSB- math -RSB- x -LSB- / math -RSB- ?
What is the minimum value of -LSB- math -RSB- | \ sin x + \ cos x + \ tan x + \ csc x + \ sec x + \ cot x | -LSB- / math -RSB- ?