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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.

Guest Dec 18, 2018

#1**+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

CPhill Dec 18, 2018