**Supplied Functions (Trigonometric) **☆☆☆

SIN(x) | The sine of x |

COS(x) | The cosine of x |

TAN(x) | The tangent of x |

CSC(x) | The cosecant of x , 1/sin(x) |

SEC(x) | The secant of x , 1/cos(x) |

COT(x) | The cotangent of x , 1/tan(x) |

ASIN(x) | The arcsine of x, the angle θ such that sinθ=x,
where π/2≦θ≦π/2 |

ACOS(x) | The arccosine of x , the angle θ such that cosθ＝x,
where θ≦π |

ATN(x) | The arctangent of x , the angle θ such that tanθ＝x,
where π/2＜θ＜π/2 |

ANGLE(x,y) | The angle between the positive x-axis and the vector joining the origin to (x,y).
where π＜ANGLE(x,y)≦π |

<Note> If OPTION ANGLE DEGREES is in effect, the angles about these functions are in degrees.

<Note> These functions can not be used in the 1000-digit operation mode nor the RATIONAL operation mode. See
Precision options menu

<Supplement>

PI | The ratio of the circumference of a circle to its diameter π=3.141592.... |