Calculate distance from the Gateway Arch

Tangent of ° =

Height of arch

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base distance

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If the Height and base distance are given, Angle can be calculated using arcTan. When entering the number do not include the comma sign , because of NaN error message.

if NaN or infinity appears in the answer box it is normal because the calculation is done automatically as soon as you enter data in one of the input box. Continue entering the data in the second input text box and the NaN or infinity will be replaced by the answer.

Angle is ° =

Height of the arch

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Base distance,

Formula Recall:

Tangent of an angle = opposite side of an angle divided by the adjacent side of an angle.

Angle = arcTan of opposite side divided by the adjacent side