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sara1234

  • 3 years ago

Determine the sign of sin 5pi/4 Positive Negative

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  1. chenna
    • 3 years ago
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    http://www.youtube.com/watch?v=bC88GyYxFGw

  2. chenna
    • 3 years ago
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    ask me if you don't understand. message me.

  3. sara1234
    • 3 years ago
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    can you tell me if its postive or negaative?

  4. chenna
    • 3 years ago
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    5pi/4 is 225 degrees. So it is in 3rd quadrant. In 3rd quadrant Sin is negative. Answer is negative.

  5. chenna
    • 3 years ago
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    -1/sqrt(2)

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