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anonymous

  • one year ago

Establish the Identity: csc tetha * tab tetha=sec tetha

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  1. anonymous
    • one year ago
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    \[\csc \Theta \times \tan \Theta=\sec\]

  2. anonymous
    • one year ago
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    @jim_thompson5910

  3. jim_thompson5910
    • one year ago
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    hints: csc = 1/sin tan = sin/cos

  4. jim_thompson5910
    • one year ago
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    also, sec = 1/cos

  5. jim_thompson5910
    • one year ago
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    try transforming the left side into the right side do not alter the right side at all

  6. anonymous
    • one year ago
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    ok gimme a minute

  7. anonymous
    • one year ago
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    i changed it to|dw:1433390278065:dw|

  8. jim_thompson5910
    • one year ago
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    good |dw:1433390396074:dw|

  9. jim_thompson5910
    • one year ago
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    and the last line would be sec(theta) = sec(theta)

  10. anonymous
    • one year ago
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    ok i understood that, but how did you know the hints?

  11. jim_thompson5910
    • one year ago
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    it's something to memorize or have on a sheet like this http://tutorial.math.lamar.edu/pdf/Trig_Cheat_Sheet.pdf

  12. jim_thompson5910
    • one year ago
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    see page 2 where it says "Tangent and Cotangent Identities" and "Reciprocal Identities"

  13. jim_thompson5910
    • one year ago
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    your teacher may give you a sheet like that on the exam, but it's best to ask him/her first

  14. anonymous
    • one year ago
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    yeah i don't he give us that, so i'm going to have to memorize it by tomorrow! thanks for the link

  15. jim_thompson5910
    • one year ago
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    np

  16. anonymous
    • one year ago
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    so basically since I got sec theta=sec theta that's the identity getting established?

  17. jim_thompson5910
    • one year ago
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    yeah once you get to something in the form x = x, you have effectively proven the identity is confirmed

  18. anonymous
    • one year ago
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    okay understood

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