Please wait...
1800-212-7858 (Toll Free)
9:00am - 8:00pm IST all days

or

Thanks, You will receive a call shortly.
Customer Support

You are very important to us

For any content/service related issues please contact on this toll free number

022-62211530

Mon to Sat - 11 AM to 8 PM

I require help with this sum: Prove that: 1/tan3A-tanA -1/cot3A-cotA=cot2A

Asked by 30th July 2012, 11:46 AM
Answered by Expert
Answer:
(1 / {tan 3A - tan A}) =(cot 3A cot A)/(cot A - Cot 3A)
 
1/(cot 3A - cot A) = - 1/(cot A - cot 3A)
 
On subtracting, we get,
(1 + cot 3A cot A)/(cot A - cot 3A) = cot (3A - A) = cot2A
Answered by Expert 30th July 2012, 1:53 PM
Rate this answer
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10

You have rated this answer /10

Your answer has been posted successfully!