+118723 csc=1.25 what is the value of cos
$$\\cosec\theta = \frac{Hyp}{opp}=\frac{5}{4}\\\\
adj=\sqrt{25-16}=\sqrt{9}=3\\\\
cos\theta = \frac{adj}{Hyp}=\frac{3}{5}=0.6\\\\
$ that is if it is in the 1st quad, but it might be in the 2nd quad$\\\\
cos\theta = \pm\;0.6$$
