Question

Use a right triangle to write the expression in algebraic form, given y = arccos x, 0 < y < pi/2

cot (y)

Answer 1

That's the triangle that I have. I just haven't seen any of this in so long that I've forgotten.

Answer 2

find the missing side using pythagoras you get \(\sqrt{1-x^2}\)

Answer 3

then the cotangent is "adjacent over opposite" and you are done

Answer 4

where you been?

Answer 5

\[\frac{ x }{ \sqrt{1-x^2} }\]

Answer 6

yes

Answer 7

Thank you! Wow, I'm really rusty on all things math, but I guess there is where OPenStudy can help! :)

Answer 8

rust is good
nice to see you again

Answer 9

Yeah, I will definitely be here. Calc. II is a beast...