If cos x = 0.6, and 3Pie/2 < x < 2Pie, then find(adsbygoogle = window.adsbygoogle || []).push({});

a. sin (x) and B. sin (-x)

I figured out x to be 5.357 by trial and error but Is there another way to do this?

Is there some sort of rule that can help me out?

I tried using Cos(x)^2 + Sin(x)^2 = 1, but I ended up getting a different answer.

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# Homework Help: Simple Trig Question

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