Is it possible to start the iPhone calculator from within an iOS app?
I find it really annoying to have to leave an app and open the calculator just to "trig out" a right triangle and then return to the original app.  I have a calculator class of my own however I would prefer not to reinvent the wheel for my app; especially with all the edge cases involved with Trig. 
Can anyone offer some insight whether this is possible or suggest a possible implementation?
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        jscs
        
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1 Answers
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        No, the calculator app doesn't have a public schema that you can use to invoke it
        Antonio MG
        
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