how he is using the d

plz do in simple steps

file attached

Printable View

- Jul 9th 2011, 12:35 AMmoonnightingalekindly explain the step
how he is using the d

plz do in simple steps

file attached - Jul 9th 2011, 12:42 AMSironRe: kindly explain the step
If you write:

$\displaystyle \sqrt{(h_t+h_r)^2+d^2}$ as $\displaystyle \sqrt{d^2\cdot\left(\frac{(h_t+h_r)^2}{d^2}+1 \right)}= ...$

Can you complete? ...

For the other term it's similar. - Jul 9th 2011, 12:44 AMGokuRe: kindly explain the step
First take the d^2 as a common factor for both terms and then work from there..

i.e (ht + hr)^2 +d^2 = d^2 [(ht+hr)^2 / d^2 + 1] - Jul 9th 2011, 12:45 AMmoonnightingaleRe: kindly explain the step
other term is delta

- Jul 9th 2011, 12:48 AMmoonnightingaleRe: kindly explain the step
- Jul 9th 2011, 12:51 AMSironRe: kindly explain the step
Because you have to take the square root.

- Jul 9th 2011, 12:51 AMGokuRe: kindly explain the step
take the

of d^2 [(ht+hr)^2 / d^2 + 1], this whole term is underneath a square root...__square root__

(d^2 [(ht+hr)^2 / d^2 + 1])^1/2 = d [(ht+hr)^2 / d^2 + 1]^1/2 - Jul 9th 2011, 12:53 AMmoonnightingaleRe: kindly explain the step
no it is not working

can u show me these simple steps

thanks a lot - Jul 9th 2011, 12:54 AMmoonnightingaleRe: kindly explain the step
- Jul 9th 2011, 12:55 AMGokuRe: kindly explain the step
http://upload.wikimedia.org/math/5/e...6beec9d791.png

x = d^2

y = (ht+hr)^2 / d^2 + 1