Question about Texas Instruments TI-84 Plus Calculator
Happened to me be4, except all my buttons didn' t work. I just did what people do in movies. throw it aroun, step on it, bang it against walls, desks , ect. Then my teacher took it away. The banging cleared all my ram. It was weird, but it started working.
I think the circuit board moved, and i hit it back into alignment.
Posted on Jun 03, 2008
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Posted on Jan 02, 2017
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Oct 09, 2013 | Texas Instruments TI-82 Calculator
SEC, CSC & COT are the INVERSE of COS, SIN & TAN and are usually require hitting the "2nd F" or "Func" key of the calc to make:
SIN button work as COSEC,
COS button work as SEC
TAN button work as COT
Formulas are below:
sec x = 1
cosec x = 1
cot x = 1 = cos x
tan x sin x
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