trig? oat

[fifa518]

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How in depth do we have to go for the trig identities ? should i memorize every one or just the main ones we should remember from pre-calc?

 

[Mark2K8]

I'd probably be familiar with all of these until and including "double angle formulas": http://www.sosmath.com/trig/Trig5/trig5/trig5.html

Also be familiar with the quadrants and where sin is +, cos + e.t.c.

 

[canada17]

I had read somewhere that it is a good idea to know the three basic indentities:

sin2x + cos2x=1
tan2x + 1=sec2x
cot2x + 1= csc2x

However, it probably wouldn't hurt to be familiar with any others

 

[fifa518]

I'd probably be familiar with all of these until and including "double angle formulas": http://www.sosmath.com/trig/Trig5/trig5/trig5.html

Also be familiar with the quadrants and where sin is +, cos + e.t.c.

I had read somewhere that it is a good idea to know the three basic indentities:

sin2x + cos2x=1
tan2x + 1=sec2x
cot2x + 1= csc2x

However, it probably wouldn't hurt to be familiar with any others

Thanks for the help!