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 I would also like to know how you came up with your answer so that I may sucseed in this class.

 Dec 18, 2018
 #1
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+2

The left side  is undefined at x = 0  and 2pi ....because csc x is undefined at these values

But cos (0)  and cos (2pi)  = 1

 

csc pi/ 4 =  sqrt (2)

tan pi/ 4 = 1

cos (pi/4) = 1/sqrt (2)

So

sqrt (2) * 1    not equal to   1/sqrt(2)

 

 

csc pi/3 = 2/sqrt (3)

tan pi/3 = sqrt (3)

cos pi/3  = 1/2

So

 [ 2 / sqrt (3) [ * sqrt (3)       not equal to 1/2

 

This is not true for any value of x

 

 

cool cool cool

 Dec 18, 2018
edited by CPhill  Dec 18, 2018
 #2
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+1

thanks for the info!

Guest Dec 18, 2018

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