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trigonometric functions
summary
This subchapter looks at trigonometric fucntions.
free computer programming text book projecttable of contents

music 
OSdata.com 
This subchapter looks at trigonometric fucntions.
free computer programming text book projecttable of contents

This subchapter is a stub section. It will be filled in with instructional material later. For now it serves the purpose of a place holder for the order of instruction.
Professors are invited to give feedback on both the proposed contents and the propsed order of this text book. Send commentary to Milo, PO Box 1361, Tustin, California, 92781, USA.
This subchapter looks at trigonometric functions.
Note that all other trignometric functions can be derived from just the three functions sine, cosine, and arc tangent. Some programming languages, such as ALGOL and Pascal, use this to simplify the construction of a compiler for the programming language.
ALGOL sine(E) — ALGOL60 library function that returns the sine of an expression.
BASIC SIN(x) — BASIC library function that returns the sine of an expression.
ALGOL cos(E) — ALGOL60 library function that returns the cosine of an expression.
BASIC COS(x) — BASIC library function that returns the cosine of an expression. The expression is in radians.
Pascal cos(x) — Pascal standard function that returns the REAL cosine of an argument x expressed in radians.
BASIC TAN(x) — BASIC library function that returns the tangent of an expression. The expression is in radians.
ALGOL arctan(E) — ALGOL60 library function that returns the arc tangent of an expression.
BASIC ATN(x) — BASIC library function that returns the arc tangent of an expression.
LISP ATAN(x) — LISP function (ATAN Y X) that takes two arguments of type float or fix and returns the arc tangent of y/x in the quadrant determined by the signs of x and y. The value of ATAN is an angle θ such that y = r sin(θ) and x = r cos(θ) for some r. The result is undefined if both x and y are zero.
Pascal arctan(x) — Pascal standard function that returns the REAL arc tangent of an argument x expressed in radians.
BASIC ACS(x) — BASIC library function that returns the arc cosine of an expression. The expression is in radians (57 degrees approximately = 1 radian). The Sinclair ZX80 uses ARCOS and the SHARP 1211 (TRS80 Pocket Computer) uses AC.
BASIC ACSD(x) — BASIC library function for some forms of BASIC that returns the arc cosine of an expression. The expression is in degrees.
BASIC ACSG(x) — BASIC library function for some forms of BASIC that returns the arc cosine of an expression. The expression is in grads (110 grads = 90 degrees).
PL/I ACOS(x) — Pl/I builtin function that returns the arc cosine (angle in radians whose cosine is) of a variable or expression.
“42.1/2 The predefined standard library packages provide facilities such as string manipulation, containers of various kinds (vectors, lists, maps, etc.), mathematical functions, random number generation, and access to the execution environment.” —:AdaEurope’s Ada Reference Manual: Introduction: Language Summary See legal information
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