Mastering the Calculator using the Sharp EL-531LH 33
To find the value of
θ
, you need to use the cos
–1
key. The calculator keystrokes are:
Note: You must first get the value of the division by using brackets.
Your display should read 60°. If it does not, check that you are in degree mode.
12. Exponential and logarithmic functions
There are two log keys on your calculator, with their associated exponential keys. The latter
are accessed by first using the yellow 2ndF key:
The ‘log’ key uses base 10 and the ‘ln’ key uses base e (natural logarithm).
Example 1
Solve equation
Taking logs of both sides;
2
=
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