Math, asked by Mehul25, 1 year ago

help me please I need it urgently.
ques.4

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Answered by arghyadipsen
1
Taking sinx/cos3x..........where x=θ2sinxcosx/2cos3xcosx.....(multiplying and dividing by 2cosx).
=sin2x/2cos3xcosx
=sin(3x-x)/2cos3xcosx
=1/2(tan3x-tanx)...
Similarly other two ...and we get
K2=1/2[(tan3x-tanx)+(tan9x-tan3x)+(tan27x-tan9x)].
K2=1/2(tan27x-tanx)
K2=1/2(k1)
k1=2k2

Mehul25: copied from the internet
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