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kaylala

  • 2 years ago

TOPIC: (trigonometry) Addition and Subtraction Identity FOrmulas Find the value of: sin(-105)

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  1. kaylala
    • 2 years ago
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    @agent0smith

  2. kaylala
    • 2 years ago
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    @Loser66

  3. kaylala
    • 2 years ago
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    @Compassionate

  4. agent0smith
    • 2 years ago
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    105 = 60 + 45 and sin(-x) = -sinx so sin(-105) = -sin(60+45)

  5. kaylala
    • 2 years ago
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    is the answer = (2(sqrt6))/4 ? @agent0smith

  6. agent0smith
    • 2 years ago
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    I don't know, wolfram alpha could check for you. Just use the angle sum formula

  7. kaylala
    • 2 years ago
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    i did it but i'm not sure with the signs

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