complex no.

Asked by Kirandoon | 13th May, 2009, 03:48: PM

Expert Answer:

1/ (1-cosθ )+isinθ 

Rationalise the denomiantor

((1-cosθ) - isinθ) / (1-cosθ) - isinθ) (1-cosθ) + isinθ)

= ((1-cosθ) - isinθ)/ (1-cosθ)2 - (isinθ)2

= ((1-cosθ) - isinθ)/ 1+cos2θ - 2cosθ + sin2θ 

= ((1-cosθ) - isinθ)/ 2(1-cosθ)

 

Answered by  | 14th May, 2009, 11:19: AM

Queries asked on Sunday & after 7pm from Monday to Saturday will be answered after 12pm the next working day.