Tangent (tan) Half Angle Formula Calculator

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Posted by Dinesh on

Online trigonometry calculator to calculate Tangent (tan) trigonometric condition (related to the tangents of the half angles) of triangles.

In trigonometry, tangent (tan) half-angle formulas relate the tangent of half of an angle to trigonometric functions of the entire angle.

tan Half Angle Formula Calculation

Formula:

tan ⁡ A 2 = 1 - tan ⁡ ( B 2 ) · tan ⁡ ( C 2 ) tan ⁡ ( B 2 ) + tan ⁡ ( C 2 )

The tangent of a half angle is given by:

tan(​2​​/α​​) = (1−cosα) / sinα

where,
A = Angle of the triangle (less than 180°) (degree),
B = Angle of the triangle (less than 180°) (degree),
C = Angle of the triangle (less than 180°) (degree)
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