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# Need Help AsAp

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cos (4pi/3)  =  cos (240°)  =  - cos (60°)  =  -1/2 how could i sketrch this

May 16, 2020

#1
+227
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Hi,

there is a website called desmos, desmos.com/calculator, a graphing calculator that will help you graph that problem.

May 16, 2020
#2
+2424
+1

Here is a sketch:

$$\frac{4\pi}{3}$$ lies between $$\pi$$ and $$\frac{3\pi}{2}$$, so the terminal side lands in the third quadrant.

May 16, 2020