Fundamental Identities Flashcards by Marissa T

Q

Sinu=

A

1/cscu

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Q

Cscu=

A

1/sinu

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Q

Cosu=

A

1/secu

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Q

Secu

A

1/cosu

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Q

Tanu

A

1/cotu

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Q

Cotu

A

1/tanu

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Q

Tanu/tan2u=

A

Sin(2)u/cos(2)u

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Q

Cotu/cot2u

A

Cos(2)u/sin(2)u

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Q

Sin & cos Pythagorean identities

A

Sin2u+cos2u=1
Sin2u=1-cos2u
Cos2u=1-sin2u

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Q

Tan and sec Pythagorean identity

A

1+tan2u=sec2u
1=sec2u-tan2u
Tan2u=sec2u-1

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Q

Cot and csc Pythagorean idenu

A

1+cot2u=csc2u
1=cot2u-csc2u
Cot2u=csc2u-1

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Q

1-csc2u, 1-sec2u

A

-cot2u, -tan2u ect

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