Quantcast

Got Homework?

Connect with other students for help. It's a free community.

  • across
    MIT Grad Student
    Online now
  • laura*
    Helped 1,000 students
    Online now
  • Hero
    College Math Guru
    Online now

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

help!!!!! Group Title

Use basic identities to simplify the expression. one divided by cotangent of theta to the second power. + sec θ cos θ

  • 9 months ago
  • 9 months ago

  • This Question is Closed
  1. help!!!!! Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    please help me! I am taking precalc online and don't understand a single thing about basic identities

    • 9 months ago
  2. hartnn Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    so its \(\huge \dfrac{1}{\cot^2 \theta + \sec \theta \cos \theta} \)

    • 9 months ago
  3. hartnn Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    firstly, use the identity that sec theta = 1/cos theta so, sec theta cos theta = 1 and do you know what is \(\large 1+\cot^2 \theta = ... ?\)

    • 9 months ago
  4. help!!!!! Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    only the cot^2theta is the denominator

    • 9 months ago
  5. help!!!!! Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    no I don't know, I am COMPLETELY lost in this subject

    • 9 months ago
  6. hartnn Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    okk., so anyways you can use sec theta cos theta = 1 \(\large \dfrac{1}{\cot^2 \theta }+1 \)

    • 9 months ago
  7. hartnn Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    now 1/ cot theta = tan theta so, \(\large \tan^2 \theta+1 \)

    • 9 months ago
  8. hartnn Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    and ther's a standard pythagorean identity that \(\large 1+\tan^2 \theta = \sec^2 \theta \) thats it! :)

    • 9 months ago
  9. help!!!!! Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    okay thank you!

    • 9 months ago
  10. help!!!!! Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    can you walk me through another please?

    • 9 months ago
  11. hartnn Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    sure

    • 9 months ago
  12. help!!!!! Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Simplify the expression. quantity cosecant of x to the power of two times secant of x to the power of two divided by quantity secant of x to the power of two plus cosecant of x to the power of two.

    • 9 months ago
  13. help!!!!! Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    |dw:1389469428352:dw|

    • 9 months ago
  14. help!!!!! Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    yes

    • 9 months ago
  15. hartnn Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    \(\large \dfrac{\csc^2 x \sec^2 x }{\sec^2 x + \csc^2 x }\)

    • 9 months ago
  16. hartnn Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    ok, we use the identity that csc x = 1/ sin x sec x = 1/cos x

    • 9 months ago
  17. help!!!!! Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    okay

    • 9 months ago
  18. hartnn Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    \(\large \dfrac{\csc^2 x \sec^2 x }{\sec^2 x + \csc^2 x } = \large \dfrac{\sin^2 x \cos^2 x }{\sin^2 x + \cos^2 x }\)

    • 9 months ago
  19. hartnn Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    now we can use the famous pythagorean identity \(\Large \color{red}{\sin^2x + \cos^2 x =1 }\)

    • 9 months ago
  20. hartnn Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    what remains is your answer! :)

    • 9 months ago
  21. help!!!!! Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    so the answer is just 1? or am I wrong?

    • 9 months ago
  22. hartnn Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    denominator = 1 yes what remains is numerator sin^2 x cos^2 x

    • 9 months ago
  23. hartnn Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    you have choices for this too ?

    • 9 months ago
  24. help!!!!! Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    yes I do the choices are: sin^2x cos^2x -1 1

    • 9 months ago
  25. help!!!!! Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    im sorry im so stupid. im usually really good at math but precalc just makes no sense to me

    • 9 months ago
  26. hartnn Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    oops, i did a simplification error \(\large \dfrac{\csc^2 x \sec^2 x }{\sec^2 x + \csc^2 x } = \large \dfrac{1 }{\sin^2 x + \cos^2 x } = 1\)

    • 9 months ago
  27. help!!!!! Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    okay and i have a question. next year I planned on taking ap stat. is that anything like precalc because i hope not. is it easier or harder?

    • 9 months ago
  28. hartnn Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    if you practice less, math is hard. if you practice more, math is easy. irrespective of any topic/subject

    • 9 months ago
  29. help!!!!! Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    well are the concepts of ap stat very similar to or very different to those of pre-calculus?

    • 9 months ago
  30. hartnn Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    statistics is a different branch of math altogether, so very different.

    • 9 months ago
  31. help!!!!! Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    i just think I'm not good at online class taking because I learn better from an actual person rather than a computer screen. I need the physical classroom environment and a teacher to give me instruction.

    • 9 months ago
  32. help!!!!! Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    what kind of problems does ap stat entail? word problems? graphs?

    • 9 months ago
  33. hartnn Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    both.

    • 9 months ago
  34. help!!!!! Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    oh okay thank you soooooo much! is there anything else that i should know?

    • 9 months ago
  35. hartnn Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    try to take up easy questions before going to harder ones. if you get stuck anytime, OpenStudy is always Open for you :)

    • 9 months ago
    • Attachments:

See more questions >>>

Your question is ready. Sign up for free to start getting answers.

spraguer (Moderator)
5 → View Detailed Profile

is replying to Can someone tell me what button the professor is hitting...

23

  • Teamwork 19 Teammate
  • Problem Solving 19 Hero
  • You have blocked this person.
  • ✔ You're a fan Checking fan status...

Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.