i'm having a problem with this integration formula..(adsbygoogle = window.adsbygoogle || []).push({});

f=(double integration cos a cos b)/(pi*d^2)dA

i have to insert this formula into an excel sheet but in excel to do integration i need to use an alternative way as the vba codes does not provide any formula for integration.

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# Integration without using integration

**Physics Forums | Science Articles, Homework Help, Discussion**