What is the exact value of $sec -330$ ?

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Answer 1 · 2018-05-06T08:20:33

$sec(-330)=(2sqrt3)/3$

$sec(-330)$

$-330" "$ will be in the first quadrant

$-330=+30$

$:.sec(-330)=sec30$

$sec30=1/cos30$

$because cos30=sqrt3/2$

$sec30=1/(sqrt3/2)=2/sqrt3$

rationalising

$sec30=(2sqrt3)/3$

What is the exact value of sec -330sec -330?