Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

mari69755

  • 2 years ago

verify equation identity (1-cot^2)/(1+cot^2)+1=2 sin^2

  • This Question is Closed
  1. mari69755
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    I try solving it and it was not an identity but I am not sure I am right.

  2. tgawade
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    |dw:1398203236677:dw|

  3. mari69755
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    yeah i I did that but at the end of it I did not get the 2sin^2

  4. tgawade
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    |dw:1398203617892:dw|

  5. mari69755
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    yes

  6. tgawade
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    At the end use property sin^2 + cos^2 = 1

  7. tgawade
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    at denominator

  8. mari69755
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    yeah that would give me 1/sin^2

  9. tgawade
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Please check it

  10. mari69755
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    wait would my denominator be (sin^2+cos^2)/ sin^2?

  11. tgawade
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    |dw:1398204432505:dw|

  12. mari69755
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    |dw:1398204540377:dw|

  13. tgawade
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    similarly at denominatior , so sin^2 get cancel from both numerator & denominator ..

  14. mari69755
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    oh wow. so there would only be left -cos^2 right

  15. tgawade
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    |dw:1398204881696:dw|

  16. tgawade
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Okay ?

  17. mari69755
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    yeah i understand that

  18. tgawade
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    what would be the next step ?

  19. tgawade
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    lcd

  20. tgawade
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Are you there ?

  21. mari69755
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    use the denominator equal one

  22. tgawade
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    |dw:1398205488285:dw|

  23. tgawade
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    So what do you get ?

  24. mari69755
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    at the top part do you multiply the a times y?

  25. tgawade
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    in our step x = (sin^2 - cos^ ) & y = sin^2 + cos^2 & a = 1

  26. mari69755
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    yes so it would be sin^2-cos^2+(sin^2-cos^2) all divided by sin^2+cos^2?

  27. mari69755
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    okay I understood it never mine. Thank you so much for your help. I did get 2sin^2 at the end.

  28. tgawade
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    You are welcome :)

  29. Not the answer you are looking for?
    Search for more explanations.

    • Attachments:

Ask your own question

Sign Up
Find more explanations on OpenStudy
Privacy Policy