Question about Texas Instruments TI-15 Explorer Calculator
The TI-15 Explorer is for primary schools (low grades). If you know about trigonometry that is not the calculator that you need.
Look for any SCIENTIFIC calculator (the cheapest you can find at a dollar store ) will do the job.
Hope it helps.
Posted on Aug 20, 2009
Tips for a great answer:
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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