IIT JEE , AIEEE Forum - Mathematics , Trignometry

reddevil_2009

If Radius =1 unit

Therefore, Length of arc=Angle subtended at centre,

then is this aproximation valid:::::::: sin(x)=x & cos(x)=1 & tan(x)=sin(x)=1

virang1

This approxiation of tan(x) being 1 is wrong since:::
According to the above condition

x =0 ; no other value is possible since sin^2(x)+cos^2(x) = 1
sin(x) = 0
theefore tan(x) = 0

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