Question 624950
<ul><li>Please post questions like this under "trigonometry"</li><li>"2 to the square root of 10/7"???
This means:<br><br>
{{{2^((sqrt(10/7)))}}} or {{{2^((sqrt(10)/7))}}}
Either one is a number greater than 1 which is an invalid value for cos. (Even {{{2*sqrt(10/7)}}} or {{{2*(sqrt(10)/7)}}} are invalid.) Either you were given a bad problem are you have made an error in how you posted it. If none of the above expressions are in your problem, then the error is in how you posted it.</li><li>Please post square roots more clearly. For example:
"square root of 29/7" means {{{sqrt(29/7)}}}
None of the square roots, as you posted them, are valid values for sin or cos because they are all greater than 1. So I assume that by
"square root of 29/7" you meant {{{sqrt(29)/7}}} which is a valid sin or cos.
If so, then you should post
"(square root of 29)/7" or "sqrt(29)/7"</li></ul>