Question

Determine the quadrant in which the terminal side of `O/` lies? `cosO/ > 0, and cscO/ >0`

Answer 1

`I^(st) Quadrant.`

Explanation:

We know that, `cscx=1/sinx`

Here,

`cosphi >0 and cscphi>0`

`=>cosphi >0 and 1/(sinphi) >0`

`=>cosphi >0 and sinphi>0=>I^(st) Quadrant.`