A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

clamin

  • one year ago

Please Help!! Medal! If tanX=3/4 , what is sin X??

  • This Question is Closed
  1. UsukiDoll
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    you need the pythagorean theorem a^2+b^2 =c^2 so for tan x = 3/4 that's tan x = opposite /|dw:1433209669615:dw| adjacent

  2. UsukiDoll
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    so we need to solve for c 3^2+4^2 =c^2 9+16 =c^2 25=c^2 5 = c normally the answer would be 5 and -5 , but we can't have negative signs at all for geometric shapes.

  3. UsukiDoll
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Imma eat lunch

  4. wolf1728
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    UsukiDoll The angle 'x' would be located in the lower left corner of the triangle.

  5. wolf1728
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    sine (x) = opposite / hypotenuse sine (x) = 3 / c

  6. clamin
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    So that would be 4/3??

  7. wolf1728
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    No sine (x) = 3 / c What is 'c'?

  8. UsukiDoll
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    it's asking for the sin x version we are given that tan x = 3/4 tan x is usually opposite/adjacent cos x is adjacent/hypotenuse sin x is opposite / hypotenuse your hypotenuse value is missing!

  9. UsukiDoll
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    if the opposite -> 3 adjacent -> 4 our sin x is 3/ ? that ? is our unknown and we need the Pythagorean theorem for a^2+b^2=c^2

  10. UsukiDoll
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    |dw:1433212099634:dw|

  11. UsukiDoll
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    so using the Pythagorean theorem a^2+b^2=c^2 let your a = 3 and b = 4 3^2+(4)^2=c^2 9+16=c^2 25=c^2 5 = c that's your hypotenuse! since Hypotenuse is 5 and makes sense since it's supposed to be the longest side of the triangle Your sin x is opposite/ hypotenuse which is 3/5

  12. UsukiDoll
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    sorry if I sounded a bit arrogant... but.. the reason why it's not 4/3 is because that's the cotangent so... sin x = opposite/hypotenuse cos x = adjacent/hypotenuse tan x = opposite/adjacent csc x, sec x, and cot x are backwards versions of what I've typed above tan x = opposite/adjacent (3/4) cot x = adjacent/opposite (4/3)

  13. 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

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.