Post a New Question


posted by .

Angles x and y are located in the first quadrant such that sinx=3/5 and cosy=5/13.

a) Determine an exact value for cosx
b) Determine an exact value for siny

  • math -

    let x = the x length
    let y = the y length
    let r = the length from the origin to the x,y point.

    r^2 = x2 + y^2

    sine of x = y/r
    so y and r are given in the problem.
    solve for x.
    cosine of x = x/r

  • math -

    In the explanation, the angle x and the x length are different items.

Answer This Question

First Name
School Subject
Your Answer

Related Questions

More Related Questions

Post a New Question