CALC 1 uses two sets of trigonometric functions.
The standard functions:
sin(), cos(), tan()
asin(), acos(), atan(), atan2()
The CALC 1 trigonometric functions that take into account the degree-radian mode of the calculator:
sindrm(), cosdrm(), tandrm()
asindrm(), acosdrm(), atandrm(), atan2drm()
Why the drm set of functions?
In all spreadsheets and C based computer languages the argument of the trigonometric functions are in radians. So it would be wrong to change the "contract" of these functions for CALC 1.
| Function | Description | Example | Result |
|---|---|---|---|
| acos(x) | The inverse cosine of a number as radians. Use ACOSDRM for the value that will return degrees or radians per the user settings. | acos( .34) | 1.22 |
| acosdrm(x) | The inverse cosine of a number in degrees or radians per the user settings. | acosdrm( .34) | 70.12 |
| acosh(x) | The inverse hyperbolic cosine of a number. | acosh(10) | 2.99 |
| asin(x) | The inverse sine of a number as radians. Use ASINDRM for the value that will return degrees or radians per the user settings. | asin( .34) | 0.35 |
| asindrm(x) | The inverse sine of a number in degrees or radians per the user settings. | asindrm( .34) | 19.88 |
| asinh(x) | The inverse hyperbolic sine of a number. | asinh(10) | 3 |
| atan(x) | The inverse tangent of a number. Use ATANDRM for the value that will return degrees or radians per the user settings. | atan( .34) | 0.33 |
| atan2(x,y) | The inverse tangent for specified x and y coordinates. Use ATAN2DRM for the value that will return degrees or radians per the user settings. | atan2(-4.4, -3.3) | -2.21 |
| atan2drm(x,y) | The inverse tangent for specified x and y coordinates in degrees or radians per the user settings. | atan2drm(-4.4, -3.3) | -126.87 |
| atandrm(x) | The inverse tangent of a number in degrees or radians per the user settings. | atandrm( .75) | 36.87 |
| atanh(x) | The inverse hyperbolic tangent of a number. | atanh(.5) | 0.55 |
| cos(x) | The cosine of an angle as radians. Use COSDRM for the value that will return degrees or radians per the user settings. | cos(.8) | 0.7 |
| cosdrm(x) | The cosine of an angle in degrees or radians per the user settings. | cosdrm(60) | 0.5 |
| cosh(x) | The hyperbolic cosine of an angle. | cosh(1) | 1.54 |
| degrees(x) | Converts radians into degrees. | degrees(mpi/2) | 90 |
| drm() | The current degree / radians conversion as selected in the calculator options, either p/180 or 1.0. Can be used to make trig functions aware of the current degree or radian user preference. | drm() | 0.02 |
| drm2deg() | Sets the degree / radians conversion as selected in the calculator options to 180/pi. | drm2deg() | |
| drm2rad() | Sets the degree / radians conversion as selected in the calculator options to 1. | drm2rad() | |
| hypot(x,y) | The hypot(x,y) function computes the sqrt(x*x+y*y) without undue overflow or underflow. | hypot(3,4) | 5 |
| radians(x) | Converts degrees into radians. | radians(90) | 1.57 |
| sin(x) | The sine of an angle as radians. Use SINDRM for the value that will return degrees or radians per the user settings. | sin(.8) | 0.72 |
| sindrm(x) | The sine of an angle in degrees or radians per the user settings. | sindrm(30) | 0.5 |
| sinh(x) | The hyperbolic sine of an angle. | sinh(1) | 1.18 |
| tan(x) | The tangent of an angle as radians. Use TANDRM for the value that will return degrees or radians per the user settings. | tan(.8) | 1.03 |
| tandrm(x) | The tangent of an angle in degrees or radians per the user settings. | tandrm(45) | 1 |
| tanh(x) | The hyperbolic tangent of an angle. | tanh(1) | 0.76 |
Reference:
Trigonometric functions - From Wikipedia, the free encyclopedia
Hyperbolic functions - From Wikipedia, the free encyclopedia