Question

it cos x =-3/5, then x lies in the 1 quadrant true or false​

Answer 1

${ \bf{If \: cos \: X \: = \dfrac{ - 3}{5} }}$

${ \rm{ { Then \: it \: doesnt \: lie \: in \: 1st \: quadrant}}}$

${ \rm{ { Because \: the \: value \: of \: 1st \: quadrant \: is = ( + ,\: - )}}}$