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What is 15pi-2? Thanks in advance for the help!

 Sep 20, 2019
 #2
avatar+142 
+1

Each 2 pi is a trip around the circle and doesn't affect the answer.

15 pi/2 = 6 pi + 3pi/2 so tan(15pi/2) = tan(3pi/2) and that is undefined because sin(3pi/2) = -1

and cos(3pi/2) = 0

and (-1/0) is division by 0 and that is undefined.

 Sep 20, 2019
 #3
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15*pi-2 = 45.1238898038468986

 Sep 20, 2019
 #4
avatar+43 
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15*π-2=45.1238898038

 Sep 20, 2019
 #5
avatar+105634 
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15pi-2     is already in its most simple form.

 

You can approximate it but you cannot simplify it.

 Sep 21, 2019

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