Why did you need to ask? How to calculate cos^4(10)?

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howsaboutno
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hello my calculator can't do Cos^4(10).
my lecturer i think said that Cos(10^4) would give the same answer but i can't remember what exactly he said. Please help me!
 
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Cos^4(10)=(Cos(10))^4~0.49567377320016326248312233272211
Cos(10^4)~-0.95215536825901485124038676066331
 
WHY can't your calculator do cos4(10)? It certainly looks straightforward. Do you get some kind of error message?
 
howsaboutno said:
hello my calculator can't do Cos^4(10).
my lecturer i think said that Cos(10^4) would give the same answer but i can't remember what exactly he said. Please help me!

Well from your post it's pretty clear that you don't even understand what cos^4(10) means, so surely the underlying problem is here and not with the calculator.

[itex]\cos^n(x)[/itex] means [itex](\cos\,x)^n[/itex], ok.

So now you know what it means I suppose that your calculator will now be able to do it.