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RonnyDeKoning

  • 2 years ago

How do i start with this?

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  1. RonnyDeKoning
    • 2 years ago
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    |dw:1353243606008:dw|

  2. UnkleRhaukus
    • 2 years ago
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    \[2\cdot\sin^2(22.5°)-7\]?

  3. RonnyDeKoning
    • 2 years ago
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    I have to use halving formulas.

  4. RonnyDeKoning
    • 2 years ago
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    Or doubling, I don't know

  5. sauravshakya
    • 2 years ago
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    HINT:|dw:1353244003286:dw|

  6. sauravshakya
    • 2 years ago
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    |dw:1353244089060:dw|So,

  7. sauravshakya
    • 2 years ago
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    Now, can u?

  8. RonnyDeKoning
    • 2 years ago
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    Hmm, this is the sample answer, but i don't get it:|dw:1353244153625:dw|

  9. sauravshakya
    • 2 years ago
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    |dw:1353244390655:dw|

  10. RonnyDeKoning
    • 2 years ago
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    |dw:1353244542535:dw| What step do you use here?

  11. RonnyDeKoning
    • 2 years ago
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    |dw:1353244580109:dw|

  12. sauravshakya
    • 2 years ago
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    |dw:1353244997053:dw|I used

  13. RonnyDeKoning
    • 2 years ago
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    What kind of formula is that?

  14. RonnyDeKoning
    • 2 years ago
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    It's a doubling formula right?

  15. sauravshakya
    • 2 years ago
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    |dw:1353245573421:dw|

  16. RonnyDeKoning
    • 2 years ago
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    Is there a patron to slove these kind of ex?

  17. hba
    • 2 years ago
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    pattern*,solve*

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