Qualification > Math

C1 Edexcel Jan2010 Question! Please help!

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halosh92:

--- Quote from: nid404 on April 28, 2010, 10:04:32 am ---oh yes
it says all possible values...
sin(180-theta)=sin theta => value of x in this case is great than 180...so rejected
sin(-180-theta)=sin theta

-180-20.5=-200.5
-200.5= x-30
x=170.5


--- End quote ---
could u please tell me how to do this...?? like are there any rules for the cos , sin and tan curves? any websites or gd resources for
understanding this entire lesson? please!!!!!!!!!!!!

nid404:


here http://www.s-cool.co.uk/alevel/maths/trigonometry.html

~ A.F ~:

--- Quote from: nid404 on April 28, 2010, 11:10:42 am ---
here http://www.s-cool.co.uk/alevel/maths/trigonometry.html

--- End quote ---

i love this site..u've got great resources Nid ;D :P

nid404:

--- Quote from: ~ A.F ~ on April 28, 2010, 11:17:47 am ---i love this site..u've got great resources Nid ;D :P

--- End quote ---

thank u A.F, thank u ;)

halosh92:
thx alot :)

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