find x if logcosx = 0.5 ∀ x acute solution##########
find x if logcosx = −0,5 ∀ x acute solution##########
find x if logsinx = 0.4 ∀ x acute solution##########
y = logx ≝ log10x is plotted using a set of straight lines and a scientific calculator.
'≝' is the Cambria Math Character Code 225d 'equal to by definition'.
