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![[Post New]](/templates/default/images/icon_minipost_new.gif) 9 Jul 2007 21:42:18 IST
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how is sin( -2n )=sin? Also how do you plot trigonometric ratios on the graph?
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9 Jul 2007 22:31:44 IST
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u can write it as -(2npie-theta) this takes it to iv quad where sin is itself negative so -- & -- + thats why it becomes sin theta rate me if clear
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9 Jul 2007 22:40:05 IST
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and what about the second part?
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Just Plot like u plot any other graph
like if u have some line like
y = 2x
u take values of x.....then corresponding y values and plot by proper selection of axes......
for trigo functions......u take
y = sin x
and take values of x which gives u a decent number like
x= 0 / 30/ 45 / 60 / 90
y= corresponding values
and plot
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Sometimes One Dream Is Enough To Light Up The Entire October Sky....
First Year Mechanical Engineering
Veermata Jijabai Technological Institute |
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10 Jul 2007 00:34:20 IST
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Use simple formula of trigo sin(A-B)=sinAcosB-cosAsinB
cos2npi=1,sin2npi=0 always,as for as plot is concerned i see it similar to other graph,if u can give a particular problem i can explain u better
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Krishna Gopal Singh
B.Tech Chemical Engg
IIT Delhi 2002
Currently doing PhD from IIT Delhi |
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10 Jul 2007 18:20:08 IST
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u can consider integral multiple of 2pi as....NOTHING...
u can just remove it if it is present in the angle of any trigo ratio!
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10 Jul 2007 18:22:01 IST
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If u r talking abt plotting sin,cos tan...on graphs...u will learn it when u'll study calculas...
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