Ihow do I get the answer for sin(pi/6) on the TI-30 XIIS

SOURCE: TI-84 Plus silver edition sin/cos/tan

for function = (sin,cos,tan,sec,cosec,cotan)
arc(function) = function^-1, calculated in the first quadrant for simplicity(0-pi/2) (0-90deg), as all functions repeat circularly
just another method of notation

http://www.mathwords.com/t/tangent_inverse.htm

SOURCE: TI-83Plus

Make sure you are set to degrees, radians, or grads, whichever angular measurement you are using.

The DRG key toggles through the three modes of input, and the display shows which you are in.

30 SIN will give the correct 0.5 answer if you are set to use DEG.

Set to RAD and since 30 degrees = (30)(pi)/180= 0.52234 rad, set to RAD and 0.52234 SIN also gives you the correct 0.5 result

SOURCE: Tan Cos and Sin errors

go to:


mode
select DEGREE rather than RADIAN three lines down.

SOURCE: My new calculator is giving incorrect answers to

Your calculator is set to radians, which is the norm for higher mathematics. To set it to degrees, press MODE to bring up the mode editor, press down-arrow twice to get the the angular mode, press right-arrow to highlight "DEGREE," and press ENTER. Press 2ND [QUIT] to exit the mode editor.

SOURCE: My TI-89 won't solve for sin, cos, or tan. I can

Press diamond ENTER to convert the result to numeric form.

To have everything come out numeric, press MODE F2 then down-arrow down to Exact/Approx, then right-arrow and select APPROXIMATE. Press ENTER to set the choice, then ENTER again to save and exit.