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

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2nd

On a TI calculator you can select the second functions of the keyboard

2nd

 

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Explanation

Above the keys is the description in yellow. Pressing is shown on the screen with a blinking ↑ arrow up.

 

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Example 1

To calculate sin⁻¹(1) = 90° in degrees

				SIN-1E
2nd		↑		SIN		sin⁻¹(	1	ENTER		sin⁻¹(1
										90

 

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Example 2

To calculate cos⁻¹(−1) = π = 3.1415… in radians

		COS⁻¹F
2nd		cos		(–)	1	ENTER		cos⁻¹( -1
								3.141592654

 

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Example 3

To calculate sin (½π) = 1 in radians

				π     H
SIN		2nd		∧		÷	2	ENTER		sin(π/2
										1

 

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Example 4

To calculate √2 = 1,4142…

		√I
2nd		x²	2	ENTER		√(2
						1.414213562

 

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Example 5

To calculate ln (e²) = 2 × ln (e) = 2 × 1 = 2

				exS
LN		2nd		LN	2	ENTER		ln(e^(2
								2

 

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Example 6

To calculate 10^1.25 = 17.7827…

		10xN
2nd		LOG	1	·	2	5	ENTER		10^(1.25
									17.7827941

 

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