Functia ctg Flashcards by Stefania Moldovean

Q

ctg (a+b)

A

ctgactgb-1/ctg b+ctg a

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Q

ctg (a-b)

A

ctgactgb+1/ctg b-ctg a

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Q

ctg (pi/2-x)

A

tg x

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Q

ctg 2x

A

ctg^2x-1/2ctgx

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Q

ctg a+ctg b

A

sin (a+b)/sinasinb

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Q

ctg a-ctg b

A

sin (a-b)/sinasinb

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Q

ctg (-x)

A

-ctg x

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