Qualification > Math

maths doubts....

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helllife:
thank you very much!!!  :)

slvri:
and also
sin(x+360)=sinx
cos(x+360)=cosx
tan(x+180)=tanx
there are many more but ive forgotten them
and ur welcome ;)

helllife:
hey what about
sin(180+x), cos(180+x), tan(180+x)??

astarmathsandphysics:
Will post when i get home. There are some useful formulae.

slvri:

--- Quote from: helllife on November 21, 2009, 04:05:27 pm ---hey what about
sin(180+x), cos(180+x), tan(180+x)??

--- End quote ---
oh sory..........tan(180+x)=tanx
and sin(180+x)=-sinx
and cos(180+x)=-cosx

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