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anonymous

  • 5 years ago

Help with Trig!!-- 2 tan x +2=0....... solve for all degree solutions and x = 0 degrees < x< 360 degrees

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  1. anonymous
    • 5 years ago
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    135/2 degs and 315/2 degs.

  2. anonymous
    • 5 years ago
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    maybe there are more answer.s..

  3. anonymous
    • 5 years ago
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    oops no. sry im wrong

  4. anonymous
    • 5 years ago
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    can you please show me how to solve this step by step? please

  5. anonymous
    • 5 years ago
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    im wrong

  6. anonymous
    • 5 years ago
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    i moved 2 over and divided by 2 to get tax=-1

  7. anonymous
    • 5 years ago
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    *tanx =-1

  8. anonymous
    • 5 years ago
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    and thats true when x = 135/2 degs and 315/2 degs.

  9. anonymous
    • 5 years ago
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    no no corss that, its true when 315 degs ad 135 degs..

  10. anonymous
    • 5 years ago
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    OHH WAIT

  11. anonymous
    • 5 years ago
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    oh so the answer is 135 and 315 degrees

  12. anonymous
    • 5 years ago
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    no its not

  13. anonymous
    • 5 years ago
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    only for TANX. you have 2tanx+2

  14. anonymous
    • 5 years ago
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    Tan is -1 at 180 - 45 degrees = 135 degrees and Tan is -1 at 360 - 45 degrees = 315 degrees

  15. anonymous
    • 5 years ago
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    no. plug into equation and it wont work

  16. anonymous
    • 5 years ago
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    oh i just looked in the back of my textbook... it is

  17. anonymous
    • 5 years ago
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    it only shows answers not steps.. i appreciate it

  18. anonymous
    • 5 years ago
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    im confused.. which one has the multiple angles ? like is it tan(x/2)

  19. anonymous
    • 5 years ago
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    ok nvm yeah

  20. anonymous
    • 5 years ago
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    First replace tan x with something else to make it easier to do. Then solve for that new variable. \[\text{Let tan x} = g \implies 2(tan\ x)+2 = 2g+2 \] Then solve for g. Then replace g with tan x again and take the inverse tan to find the angle between \(\frac{-\pi}{2}\) to \(\frac{\pi}{2}\) that satisfies that result. Then you can add or subtract additional \(\pi\) values to find more angles.

  21. anonymous
    • 5 years ago
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    i understand everything your telling me, howeverr.. im confused on why you subtracted 45 degrees

  22. anonymous
    • 5 years ago
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    hello?

  23. anonymous
    • 5 years ago
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    nvm.. i understand, thank you very much

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