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1. Compute sin(-60).

 

2. Find the focus of the the parabola y = x^2.

 

All help is appreciated! Tysm 

 Feb 17, 2021
 #1
avatar+32894 
+2

Unit circle     do you know how to compute the sides of the triangle for -60 degrees?

   here is a good video ....starting at  7:50 into the video

https://www.youtube.com/watch?v=3GgO7Q_kg8Q

 

       sin -60 = - sqrt3 /2

 Feb 17, 2021
edited by Guest  Feb 17, 2021
 #3
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Thank you!

Guest Feb 17, 2021
 #2
avatar+32894 
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y = (1) * x^2       a = 1     focus =   (0, 1/4a) = (1 , 1/4 )

 Feb 17, 2021
 #4
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Typo      Focus = (0, 1/4)

Guest Feb 18, 2021

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