I was wondering how would i find x degree if 3√ 5 is the hypotenuse and 3 is the adjacent side I would have to use cos-1. The 3√ 5 is what i don't understand the most how would i put that into a TI calculator? Thanks for your help.

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- Jan 24th 2010, 01:32 PMJubblyRadicals in trigonometric ratios
I was wondering how would i find x degree if 3√ 5 is the hypotenuse and 3 is the adjacent side I would have to use cos-1. The 3√ 5 is what i don't understand the most how would i put that into a TI calculator? Thanks for your help.

- Jan 24th 2010, 01:37 PMMoo
Hello,

There's a square root sign in a TI. In my TI89, it's above the multiplication sign ($\displaystyle \boxed{\text{2nd}} ~ \times$)

Is it what you were looking for ? - Jan 24th 2010, 02:03 PMJubbly
Not really, I was looking for how to find out how to solve x degrees with using cosine. my calculator won't let me put cos-1(3/3√ 5).

- Jan 24th 2010, 02:07 PMskeeter
- Jan 24th 2010, 02:09 PMMoo
And press the green diamond + enter to get an approximate value. (I only know what command to do with a TI89, not with a 80,82,83 or 84)