can some one help me out with this please? I don't know what to do.

Make the indicated substitution and then simplify the expression.

(a) Substitute x = 9tanθ into the expression

square root(81 + x^2)/x=?

Question

can some one help me out with this please? I don't know what to do.

Make the indicated substitution and then simplify the expression. 

(a) Substitute x = 9tanθ   into the expression   

square root(81 + x^2)/x=?

anonymous · Answer

can you re-word the question.

anonymous · Answer

ok so what i have to do is substitute (9tanθ) into x in the expression square root(81+x^2)/x. So it would be sqrt(81+(9tanθ)^2)/(9tanθ)

anonymous · Answer

@awesomelyqwerty

anonymous · Answer

im not sure...how would you fill it in

anonymous · Answer

hmm ok thank you anyways @awesomelyqwerty

anonymous · Answer

no problem....try googling it

anonymous · Answer

i tried nothing came up at all @awesomelyqwerty

anonymous · Answer

let me see hold on.....

anonymous · Answer

yeah....sorry i couldn't help @RaulM

anonymous · Answer

its ok thank you though i appreciate the effort. @awesomelyqwerty

anonymous · Answer

:)

anonymous · Answer

can you bring in others to see if they can help me? @awesomelyqwerty

anonymous · Answer

no prob..... @Destinymasha  @AntoinetteWillman  @amistre64

anonymous · Answer

please do help out @Destinymasha  @AntoinetteWillman  @amistre64

destinymasha · Answer

......i have no idea, sorry

anonymous · Answer

its ok thank you anyways @Destinymasha  do you mind bringing others who can?

anonymous · Answer

@Destinymasha  can you add people to see if anyone else would know

destinymasha · Answer

@tHe_FiZiCx99