Trig Identities Flashcards

1
Q

(Reciprocal) csc(x)=

A

1/sin(x)

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2
Q

(Reciprocal) sec(x)=

A

1/cos(x)

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3
Q

(Reciprocal) cot(x)=

A

1/tan(x); cos(x)/sin(x)

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4
Q

(Even-Odd) sin(-x)=

A

-sin(x)

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5
Q

(Even-Odd) cos(-x)=

A

cos(x)

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6
Q

(Even-Odd) tan(-x)=

A

-tan(x)

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7
Q

(Pythagorean) sin^2(x)+cos^2(x)=

A

1

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8
Q

(Pythagorean) 1+tan^2(x)=

A

sec^2(x)

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9
Q

(Pythagorean) 1+cot^2(x)=

A

csc^2(x)

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