Tangent (tan) Half Angle Formula Calculator

tan Half Angle Formula Calculation

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.

Formula:

$\tan \frac{A}{2} = \frac{1 - \tan (\frac{B}{2}) \cdot \tan (\frac{C}{2})}{\tan (\frac{B}{2}) + \tan (\frac{C}{2})}$

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)

Tangent (tan) Half Angle Formula Calculator

tan Half Angle Formula Calculation

Formula:

Trigonometric and Tangent Tools