fx-82MS      fx-82TL      fx-9860GII      TI-83

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cos

On a Casio calculator you can calculate the cosine

cos

 

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Example 1

To calculate cos (0) = 1

				cos 0              1.
cos	0	=

 

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Example 2

To calculate cos (π) = −1

		SHIFT		π				cos π               -1.
cos				EXP		=

 

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Example 3

To calculate cos (180°) = −1

				cos 180           -1.
cos	1 8 0	=

 

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Example 4

To calculate cos (½π) = 0

		SHIFT		π				sin .5π           0.
cos	·  5			EXP		=

 

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Example 5

To calculate sec (0) = 1

								Ans-1               1.
cos	0	=		x⁻¹		=

 

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