Formulas for Exam 2 Flashcards by Camelia Qumsieh | Brainscape

Q

tan0 (quotient)

A

sin0/cos0

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Q

cot0(quotient)

A

cos0/sin0

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Q

sin0

A

1/csc0

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Q

cos0

A

1/sec0

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Q

tan0 (reciprocal)

A

1/cot0

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Q

csc0

A

1/sin0

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Q

sec0

A

1/cos0

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Q

cot0 (reciprocal)

A

1/tan0

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Q

s + c Pythagorean theorem?

A

sin02+cos02=1

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Q

s - t Pythagorean theorem

A

sec20-tan20=1

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Q

c - c Pythagorean theorem?

A

csc20-cot20=1

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Q

sin(-0)=

A

-sin0

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Q

tan(-0)

A

-tan0

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Q

csc(-0)

A

-csc0

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Q

cos(-0)=

A

-cos0

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Q

cot(-0)=

A

-cot0

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Q

sec(-0)=

A

-sec0

Q

sin(pi/2-0)

A

cos0

Q

tan(pi/2-0)

A

cot0

Q

csc(pi/2-0)

A

sec0

Q

cos(pi/2-0)

A

sin0

Q

cot(pi/2-0)

A

tan0

Q

sec(pi/2-0)

A

csc0

Q

sin(20)

A

2sin0cos0

Q

cos(20)

A

cos20 - sin20
2cos20-1
1-2sin20

Q

tan(20)

A

2tan0/1-tan0

Q

sin(0+-o)

A

sin0coso+- cos0sino

Q

cos(0+-o)

A

cos0coso-+ sin0sino

Q

tan(0+-o)

A

tan0+-tano/1+-tan0tano

Q

sin20=

A

1-cos(20)/2

Q

cos20=

A

1+cos(20)/2

Q

tan20=

A

1-cos(20)/1+cos(20)

Q

sin0+sino=

A

2sin[0+o/2]cos[0-o/2]

Q

sin0-sino=

A

2cos[0+o/2]sin[0-o/2]

Q

cos0+coso=

A

2cos[0+o/2]cos[0-o/2]

Q

cos0-coso

A

-2sin[0+o/2]sin[0-o/2]

Q

sin0sino=

A

{cos90-o)-cos(0+o)}/2

Q

cos0coso=

A

{cos(0-o)+cos(0+o)}/2

Q

sin0coso=

A

{sin(0+o)+sin(0-o)}/2

Q

cos0sino=

A

{sin(0+o)-sin(0-o)}/2

Q

Sin-1(-1)

A

-90 or pi/2