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aussy123 Group Title

How do I solve this problem? Solve for cosθ in sin^2θ + cos^2θ = 1

  • one year ago
  • one year ago

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  1. terenzreignz Group Title
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    This? \[\large \sin^2\theta+\cos^2\theta=1\]

    • one year ago
  2. aussy123 Group Title
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    yes

    • one year ago
  3. terenzreignz Group Title
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    Well, let's see... How to break this to you... cosθ can literally be any value from [-1 , 1] Let me explain... the value of cosθ depends on the value of θ, right?

    • one year ago
  4. aussy123 Group Title
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    yes

    • one year ago
  5. terenzreignz Group Title
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    Well, unfortunately (fortunately?) ANY value of θ would make this statement true sin²θ + cos²θ = 1

    • one year ago
  6. hartnn Group Title
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    he/she needs to solve for cos so, subtract sin^2 term from both sides, what u get ?

    • one year ago
  7. terenzreignz Group Title
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    Oops... Must have been overexcited :) My bad

    • one year ago
  8. aussy123 Group Title
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    Im trying to write it but its giving me a hard time

    • one year ago
  9. aussy123 Group Title
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    ±√(1 + sin2Θ)

    • one year ago
  10. hartnn Group Title
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    did you mean \(\pm \sqrt{1-\sin^2 \theta}\) ??

    • one year ago
  11. aussy123 Group Title
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    yes I pasted the wrong one Sorry, my computer is acting really crazy today

    • one year ago
  12. hartnn Group Title
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    ohh..if you meant that, then you are correct.

    • one year ago
  13. aussy123 Group Title
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    ok thanks you made this very easy, thank you.. :)

    • one year ago
  14. hartnn Group Title
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    glad to hear :) welcome ^_^

    • one year ago
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