how do you find the value of a given angle measurement or length of a triangle using the tan, cos, and sin buttons on the graphing calculator? please explain which buttons to press in order. thank you!
for example, tangent of 40 degrees would be 0.8391 or something? how would you get that on the calculator?
2007-05-16 08:28:26 · 3 answers · asked by ~ 4 in Science & Mathematics ➔ Mathematics
I'm working with a TI-84 Plus. Probably similar for other TI products.
If you're working with degrees you have to be in degree mode. To check this hit the mode button. Make sure degree is highlighted(white letters on a black background).
Hit clear to get out of that screen.
hit the tan key. You should see: tan(
hit 4 and 0 numerical keys then hit enter
You should have it .8390996312
Good luck.
2007-05-16 08:45:43 · answer #1 · answered by jsardi56 7 · 0⤊ 0⤋
You need to use SOHCAHTOA (sine of angle=opposite/hypotenuse, cosine of angle=adjacent/hypotenuse, tangent of angle=opposite/adjacent). So you need to know either one side and an angle or two sides of any triangle. If you have two sides, you do the division and then take the sin,cos,tan inverse of the answer (the key with the -1 next to sin,cos,tan)Using these formulas should help you.
2007-05-16 15:42:27 · answer #2 · answered by sanders_ndsu 1 · 0⤊ 0⤋
Just press tan putton then write the angle measure,
tan 40 then enter
2007-05-16 15:35:18 · answer #3 · answered by a_ebnlhaitham 6 · 0⤊ 0⤋