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20 terms

Algebra 2 / Trig Honors Flash Cards

STUDY
PLAY
sin (u+v)
sin u cos v + cos u sin v
sin (u-v)
sin u cos v - cos u sin v
cos (u+v)
cos u cos v - sin u sin v
cos (u-v)
cos u cos v + sin u sin v
tan (u+v)
tan u + tan v
-----------------------
1 - tan u tan v
tan (u-v)
tan u - tan v
-----------------
1 + tan u tan v
sin 2u
2 sin u cos u
cos 2u
1- 2sin^2 u
2cos^2 u -1
cos^2 u - sin^2 u
tan 2u
2tan u
-----------------
1- tan^2 u
sin^2 u
1-cos 2u
-------------
2
cos^2 u
1 + cos 2u
----------------
2
tan^2 u
1 - cos 2u
----------------
1+ cos 2u
sin u/2
± √ ( 1 - cos u) / 2
cos u/2
± √ (1 + cos u) /2
tan u/2
sin u
---------
1 + cos u
sum of a geometric series
Sn = a1 ( [1-r^(n-1) / 1-r ] )
sum of infinite geometric series
a1
----
1-r if -1<r<1
sum of an arithmetic series
Sn = n/2 ( 2a1 + (n-1) d )
nth term of a geometric sequence
a n = a1 ( r^(n-1) )
nth term of an arithmetic sequence
a1 + ( n - 1) d