Jakob L.

asked • 13d

why do so many calculators have different answers to "19(cos(38))"?

i tried six identical calculators and most said ≈14.97, but one said 18.14. google says 18.14, microsoft calculator says 14.97, desmos scientific says 14.97, desmos graph calculator says 18.14, wolfram alpha says 14.97.


i have tried many different variations, like

19cos38

19(cos38)

19(cos(38))

19cos(38)

19*cos*38

19*(cos*38)

19(cos*38)

19*(cos38)

19*cos*(38)

19*cos(38)

19(cos*(38))

(19)cos38

(19)cos(38)

(19)cos*38

(19)cos*(38)

(19)(cos38)

(19)(cos(38))

(19)(cos*38)

(19)(cos*(38))

(19)*cos38

(19)*cos(38)

(19)*cos*38

(19)*cos*(38)

(19)*(cos38)

(19)*(cos(38))

(19)*(cos*38)

(19)*(cos*(38))


you get the gist of it. of course, i did not try all of them, but many. i probably also broke every rule in this post lmao


  1. "Keep your questions short and to the point
  2. Check for grammar or spelling errors
  3. Phrase it like a question


but, anyway, does anyone have answers of which one may be able to answer the question as to why this happens?

2 Answers By Expert Tutors

By:

Jakob L.

Thanks, I'm thirteen and have just started learning about trigonometry. I have been wanting to learn about this since I was nine, when I just knew what some of the trigonometric functions were. Your answer was really helpful, so thank you.
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12d

Bradford T.

tutor
No problem. When I was your age, I asked my Algebra 1 teacher what calculus was, because I read you could use it to calculate the orbits of satellites. He said that I did not want to know because it is very complicated. I went home and told my father to find me a book on calculus, which he did and I fell in love with the subject.
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12d

John M.

tutor
I loved trig in high school and took my first Calculus class in college. I came home one weekend and visited my tiny high school, asked my math teacher if he could help me with Calculus. He said NO!. He had been in that small school for over 40 years... I had a ham radio license at age 13, and tracked the first satellite, Sputnik until its batteries went dead...
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10d

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