Evaluate the following expressions. Your answer must be in radians.(adsbygoogle = window.adsbygoogle || []).push({});

a) arctan(-(sqrt3)/3)

b) arctan((sqrt3)/3)

c) arctan(-sqrt3)

What I got are:

a) 5pi/6

b) pi/6

c) 2pi/3

Do I got these answers right?

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# Inverse trig functions

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