## Algebra and Trigonometry 10th Edition

The trigonometric Identity is verified. $\frac{tan~x~cot~x}{cos~x}=sec~x$
$\frac{tan~x~cot~x}{cos~x}=\frac{\frac{sin~x}{cos~x}\frac{cos~x}{sin~x}}{cos~x}=\frac{1}{cos~x}=sec~x$