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Homework Help Forum: trig
Posted by Chris on Wednesday, October 21, 2009 at 10:08pm.
I need HELP Verify the identity
Cot3X/CSCX=cosX(csc2X-1)
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- trig - Reiny, Wednesday, October 21, 2009 at 11:28pm
testing if x = 20º
LS = cot60/csc20
= sin20/tan60 = .1975
RS = cos20(1/sin40 - 1)
= .5222
Your equation is NOT an identity.
A check should always be your first step when proving complicated-looking trig "identities".
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