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What are the six trig function values of #-90#?

1 Answer

Mar 26, 2018

Please see below.

Explanation:

#sin(-90^0)==-sin90^0=-1#

#cos(-90^0)==cos90^0=0#

#tan(-90^0)==-tan90^0=# undefined

#csc(-90^0)==-csc90^0=-1#

#sec(-90^0)==sec90^0=# undefined

#cot(-90^0)==-cot90^0=0#

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