y=f(x) Transforms to |y|=|f(x)|

Q. the graph of cot X in third quadrant is 1) increasing from 0 to infinity 2) decreasing from infinity to 0 3) decreasing from 0 to minus infinity 4) incresing from minus infinity to 0

Q.

Find the values of other five trigonometric functions if , x lies in second quadrant.

Q. Which of the following will have their graph plotted in first and second quadrant only?

1. $\left|y\right|=f\left(\right|x\left|\right)$
2. $y=f\left(\right|x\left|\right)$
3. $\left|y\right|=f\left(x\right)$
4. $y=\left|f\left(x\right)\right|$