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huneya Group Title

find the exact value of the indicated trigonometric function of theta cosθ=4/7,tanθ<0 fin sin theta

  • one year ago
  • one year ago

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  1. rizwan_uet Group Title
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    |dw:1360331199543:dw|

    • one year ago
  2. ParthKohli Group Title
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    @Opcode

    • one year ago
  3. mathsmind Group Title
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    you find the lengths of the triangle using pyth. theorem

    • one year ago
  4. mathsmind Group Title
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    then use the principle of sin(theta)=opp/hype, and tan(theta)= sin.cos or =opp/dj

    • one year ago
  5. huneya Group Title
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    |dw:1360331698436:dw|

    • one year ago
  6. mathsmind Group Title
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    tan(theta)=sin(theta)/cos(theta)

    • one year ago
  7. huneya Group Title
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    cos is adj/hype

    • one year ago
  8. rizwan_uet Group Title
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    but here tan theta is not less than 0(zero)

    • one year ago
  9. mathsmind Group Title
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    yes exactly @huneya

    • one year ago
  10. mathsmind Group Title
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    sin(theta)=opp/hype

    • one year ago
  11. mathsmind Group Title
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    tan(theta)=opp/adj

    • one year ago
  12. rizwan_uet Group Title
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    recheck your question

    • one year ago
  13. mathsmind Group Title
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    yes @rizwan has a point tan(theta) is not less than zero

    • one year ago
  14. mathsmind Group Title
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    that condition confused me as well

    • one year ago
  15. mathsmind Group Title
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    or its an error by the book or ur teacher

    • one year ago
  16. mathsmind Group Title
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    you can use another method to solve this

    • one year ago
  17. mathsmind Group Title
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    \[\sin^2(\theta) = 1 - \cos^2(\theta)\]

    • one year ago
  18. mathsmind Group Title
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    =1-(4/7)^2

    • one year ago
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