Calc 162
To find the x root of a number:
• Enter the number of the root you want to find, e.g. 4 for the fourth root.
Tap x—, and enter the number you want to find the x root of. Press =.
To calculate the reciprocal (1/x) of a number:
• Enter the number then tap x-1 and tap =.
Trigonometric functions
You can use trigonometric functions.
To calculate the sine, cosine or tangent of a number:
• Tap sin, cos or tan. Enter the number and press =.
To calculate the inverse sine, cosine or tangent of a number:
• Tap inv once, then tap sin, cos or tan. Enter the number and press =.
To calculate the hyperbolic sine, cosine or tangent of a number:
• Tap hyp once, then tap sin, cos or tan. Enter the number and press =.
To calculate the inverse hyperbolic sine, cosine or tangent of a number:
• Tap hyp and inv once each to depress them, then tap sin, cos or tan.
Enter the number and press =.
Angle formats
The scientific calculator can express angles in degrees, radians and gradients
(360 degrees = 2S radians = 400 gradients). The angle units you use will affect
the outcome of trigonometric calculations.
To change the angle format:
• On the Tools menu, select Formats. Select the format you require.
You can also change the angle format by tapping on the abbreviation in the
calculation line (e.g. DEG). If the result of a trigonometric calculation is being
displayed when you do this, the result will automatically be re-evaluated.
Factorials
The x! button in the Scientific view calculates the factorial of a number. A
factorial is the result of multiplying all the numbers from a given starting
number down to one. So, the factorial of 4 (written as 4!) is 4×3×2×1=24.
Note! You can use factorials to find the number of ways things can be
arranged. For example, if you want to find possible anagrams of a word with
four letters, 4! shows that there are 24 ways these letters can be arranged.
To find the factorial of a number:
• Enter the number of which you want to find the factorial. Tap x! and
tap =.
Logarithms
You can use the Scientific calculator to calculate logs and natural logs.
To calculate the log (base 10) of a number:
• Tap log, then enter the number. Press =.
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