Trigonometric Identities

cotx = ?

1/tanx or cosx/sinx
secx = ?

1/cosx
cscx = ?

1/sinx
sinx = ?

1/cscx
cosx = ?

1/secx
tanx = ?
- 1/cotx
- sinx/cosx
cos²x + sin²x = ?

1
1 + tan²x = ?

sec²x
cot²x + 1 = ?

csc²x
cos(A - B) = ?

cosAcosB + sinAsinB
cos(A + B) = ?

cosAcosB - sinAsinB
sin(A - B) = ?

sinAcosB - cosAsinB
sin(A + B) = ?

sinAcosB + cosAsinB
tan(A - B) = ?

(tanA - tanB)/(1 + tanAtanB)
tan(A + B) = ?

(tanA + tanB)/(1-tanAtanB)
sin2x = ?

2sinxcosx
cos2x = ?
- cos²x - sin²x
- 1 - 2sin²x
- 2cos²x - 1
tan2x = ?

(2tanx)/(1-tan²x)
1 - sin²x = ?

cos²x
1 - cos²x = ?

sin²x
sec²x - tan²x = ?

1
sec²x - 1 = ?

tan²x
csc²x - cot²x = ?

1
csc²x - 1 = ?

cot²x
tanxcotx = ?

1
cosxsecx = ?

1
sinxcscx = ?

1
sin²x/cos²x = ?

tan²x
cos²x/sin²x = ?

cot²x
1/sec²x = ?

cos²x
1/cot²x = ?

tan²x
1/csc²x = ?

sin²x

Author

Anonymous

ID

215565

Card Set

Trigonometric Identities

Description

Trig Identities

Updated

2013-04-24T19:26:28Z

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