Find an angle (theta) with 0<(theta)<360° or 0<(theta)<(2*pi) that has the same sine value as 80°

Discussion in 'Calculator Requests' started by math_celebrity, Aug 29, 2018.

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  1. math_celebrity

    math_celebrity Administrator Staff Member

    Find an angle (theta) with 0<(theta)<360° or 0<(theta)<(2*pi) that has the same sine value as 80°.

    The sine is positive in Quadrant I and Quadrant II. So we find the reference angle for 80°.

    It's 180 - 80 = 100°.

    This is our answer. Sin(80°) = Sin(100°)
     
    math_celebrity, Aug 29, 2018
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