#### currysauce

##### Actuary in the making

A picture 2 metres high is hung on a wall with its bottom edge 6 metres above the eye of the viewer. How far from the wall should the viewer stand for the picture to subtend the largest possible verticle angle with her eye.

2.

Show that cosecx restricted to 0 < x < = pi/2 has an inverse (DONE). Calculate the inverse's derivative (that part)

thanks!

2.

Show that cosecx restricted to 0 < x < = pi/2 has an inverse (DONE). Calculate the inverse's derivative (that part)

thanks!

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