trig Flashcards by Madelyn Morse | Brainscape

Q

sin

A

y

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Q

cos

A

x

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Q

tan

A

y/x

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Q

sec

A

1/x

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Q

csc

A

1/y

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Q

coordinates 0

A

(1,0)

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Q

cot

A

x/y

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Q

coordinates pi/6

A

(√ 3/2, 1/2)

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Q

coordinates pi/4

A

(√ 2/2, √ 2/2)

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Q

coordinates pi/3

A

(1/2, √ 3/2)

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Q

coordinates pi/2

A

(0,1)

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Q

reciprocal identities: sec

A

1/cos

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Q

reciprocal identities: cos

A

1/sec

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Q

reciprocal identities: csc

A

1/sin

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Q

reciprocal identities: sin

A

1/csc

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Q

reciprocal identities: tan

A

1/cot

Q

reciprocal identities: cot

A

1/tan

Q

quotient identities: tan

A

sin/cos

Q

quotient identities: cot

A

cos/sin

Q

even identities:

A

cos0= cos(-0), sec0= sec(-0)

Q

odd identities:

A

-sin0= sin(-0), -csc0= csc(-0),
-tan0= tan(-0), -cot0= cot(-0),

Q

pythagorean identity og:

A

sin^2 + cos^2 = 1

Q

pythagorean identity/sin:

A

1 + tan^2 = sec^2

Q

pythagorean identity/cos:

A

cot^2 + 1 = csc^2

Q

periodic identities:

A

cos/sec/sin/csc = (0 + 2pin)

Q

triangle sin

A

opp/hyp

Q

triangle cos

A

adj/hyp

Q

triangle tan

A

opp/adj