Thursday
March 23, 2017

Post a New Question

Posted by on Friday, September 2, 2011 at 9:31pm.

Simplify by referring to the appropriate triangle or trigonometric identity:

cos(arctan(x))

  • math - , Friday, September 2, 2011 at 9:50pm

    sketch a right-angled triangle with some angle Ø
    , label the opposite side x and the adjacent side 1
    (this way tanØ = x/1 , and Ø = arctan(x/1)
    the hypotenuse would be √(x^2 + 1)
    and
    cosØ = 1/√(x^2+1)

Answer This Question

First Name:
School Subject:
Answer:

Related Questions

More Related Questions

Post a New Question