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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 |
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=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. |
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