Post a New Question

Math

posted by on .

If
sin(x) = 1/3 and sec(y) = 29/21
, where x and y lie between 0 and π/2, evaluate the expression using trigonometric identities. (Enter an exact answer.)
cos(2y)

  • Math - ,

    cos(y) = 21/29

    cos(2y) = 2cos^2(y) - 1 = 2(21/29)^2 - 1 = 41/841

Answer This Question

First Name:
School Subject:
Answer:

Related Questions

More Related Questions

Post a New Question