TAN

The TAN function returns the tangent of an angle that is expressed in radians.

TAN(radian-angle)

radian-angle: A number value representing an angle, expressed in radians. Although radian-angle can be any number, it would normally be in the range –π to +π (–pi to +pi).

Notes

  • The tangent is the ratio of the sine to the cosine.

Examples

=TAN(1) returns 1.5574077246549, the tangent of 1 radian (approximately 57.3 degrees).

=TAN(RADIANS(45)) returns 1, the tangent of a 45-degree angle.

=TAN(3*PI()/4) returns -1.

See alsoATANATAN2ATANHCOSDEGREESSINTANH
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