iphone - orient a uiimageView to the center of the screen -


well have several images of plans that, every time open application, created @ random position. want, every time plan created, nose oriented center of screen, think must calculate angle between center , image , rotation, i'm not sure . can me please ! sorry english i'm french :/

 myimageview.transform = cgaffinetransformmakerotation(30 * m_pi / 180.0);  //this rotate 30 degres. luck!

to angle need need trig.

http://en.wikipedia.org/wiki/sine


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