Maths question (1 Viewer)

[shazads91]

Hey could someone help me solve the following as I seem to be running around in circles?Thanks!

if (a+b)/cosecA=(a-b)cotA then prove cosecA.cotA= (a squared- b squared)/ 4ab

Sorry don't have the ability to use mathematic notation.


The problem reads if a plus b over cosec A equals a minus b over cotA then use this to prove that cosecA times cotA equals a squared b divided by 4timesatimesb.

Its out of the cosgrove 3u text book.

 

[jeffwu95]

got like (a^2-b^2)/(a-b)^2 :s

 

[Sanjeet]

Hey could someone help me solve the following as I seem to be running around in circles?Thanks!

if (a+b)/cosecA=(a-b)cotA then prove cosecA.cotA= (a squared- b squared)/ 4ab

Sorry don't have the ability to use mathematic notation.


The problem reads if a plus b over cosec A equals a minus b over cotA then use this to prove that cosecA times cotA equals a squared b divided by 4timesatimesb.

Its out of the cosgrove 3u text book.

Those are not the same.

 

[Shadowless]

. . .

No wonder i couldn't get the fucking solution...

 

[shazads91]

Its question 18(b) from Cambridge Yr 11 3unit text. Exercise 4F on trig identities and elimination.
Thanks!

 

[Sanjeet]

Scan the question up. not all of us have the text book
Or you can type the question up

http://community.boredofstudies.org/showthread.php?t=234261
start with [tex*] and end with [/tex*] without the *