# If only it's a power of 3

Geometry Level 5

$\large 2\sqrt[3]{3\sec ^2 20^\circ \sin^2 10^\circ}$

The expression above can be expressed in the form $$a+b\sec 20^\circ$$, where $$a$$ and $$b$$ are integers. What is the value of $$a+b$$?

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