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anonymous

  • one year ago

Please help me! Will fan and medal! 1)In two or more complete sentences, explain how to find the exact value of secant(13pi/6) including quadrant location. 2)In two or more complete sentences, explain how to find the exact value of cotangent (7pi/4) including quadrant location.

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  1. welshfella
    • one year ago
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    13pi/6 - 2pi = 13pi/6 - 12pi/6 = pi/6 which is an angle in the first quadrant. You can find the cosine of pi/6 from the standard 30/60/90 triangle . The secant is = 1 / cosine.

  2. welshfella
    • one year ago
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    |dw:1437070404674:dw|

  3. welshfella
    • one year ago
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    |dw:1437070804048:dw|

  4. welshfella
    • one year ago
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    2pi - 7pi/4 = 8pi/4 - 7pi/4 = pi/4 . This is an angle in the 4th quadrant where the tangent is negative. You can find the exact values by considering the standard triangle 45-45-90 . The cotangent = 1 / tangent.

  5. welshfella
    • one year ago
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    |dw:1437071100308:dw|

  6. welshfella
    • one year ago
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    note pi/6 = 30 degrees and pi/4 = 45 degrees.

  7. anonymous
    • one year ago
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    thank you so much!

  8. anonymous
    • one year ago
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    @welshfella

  9. welshfella
    • one year ago
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    yw

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