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December 19, 2014

December 19, 2014

Posted by **Grace** on Friday, January 1, 2010 at 6:01pm.

cotx=cscx-1

the answer choices are:

a.) x=Pi/2

b.) x=Pi/2 and 3Pi/2

- Trig -
**Reiny**, Friday, January 1, 2010 at 7:17pmpi/2 surely works, (try subbing it in)

remember that 3pi/2 is 270º

tan 270º is undefined, so cot 270º = 0

LS = cot 3pi/2 = 0

RS = 1/sin 270 - 1 = 1/-1 - 1 = -2

so 3pi/2 does not work.

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