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Math Help - tangent

  1. #1
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    tangent

    Find the angle of theta with all real numbers (0,2,PIE) in radians, in quadrant 2 whose tangent is -4. Show results to two decimal places.

    theta= ___________________ radians
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  2. #2
    Junior Member Khaali91's Avatar
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    Quote Originally Posted by asweet1 View Post
    Find the angle of theta with all real numbers (0,2,PIE) in radians, in quadrant 2 whose tangent is -4. Show results to two decimal places.

    theta= ___________________ radians

    Tanx=-4

    use ur calculator and find the inverse tangent of -4

    the answer u get is theta then u multiply the answer by
    pi_
    180
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  3. #3
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    i got -1.32 as theta then mulyiplies by pi/180 and got -75.63 and it says im wrong
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  4. #4
    Junior Member Khaali91's Avatar
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    Quote Originally Posted by asweet1 View Post
    i got -1.32 as theta then mulyiplies by pi/180 and got -75.63 and it says im wrong
    change the mode to degrees
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  5. #5
    A riddle wrapped in an enigma
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    Quote Originally Posted by asweet1 View Post
    Find the angle of theta with all real numbers (0,2,PIE) in radians, in quadrant 2 whose tangent is -4. Show results to two decimal places.

    theta= ___________________ radians
    \theta=arctan( -4)

    \theta\approx-1.325817664 radians.

    Reference angle in QII = -1.325817664 + \pi=1.81577499 radians.To the nearest 2 decimal places ==> 1.82 radians.
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  6. #6
    Junior Member Khaali91's Avatar
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    Quote Originally Posted by masters View Post
    \theta=arctan( -4)

    \theta\approx-1.325817664 radians.

    Reference angle in QII = -1.325817664 + \pi=1.81577499 radians.To the nearest 2 decimal places ==> 1.82 radians.
    sry forgot it was in QII
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