Macro shots of flowers will typically have a shallow depth of field. true or false?

It is TRUE that macro shots of flowers will typically have a shallow depth of field. 

Macro photography (or photomacrography or macrography, and sometimes macrophotography), is extreme close-up photography, usually of very small subjects, in which the size of the subject in the photograph is greater than life size (though macrophotography technically refers to the art of making very largephotographs).

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no. dot product   =0 when vecs at right angles

do you have a formula possibly