Post a New Question

equation trig

posted by .

cosx-sinx<1/2

  • equation trig -

    square both sides

    cos^2 -2sin*cos + sin^2<1/4
    1-sin(2x)<1/4
    sin(2x)<-3/4
    2x>131deg
    x>65.5 deg
    2x<311
    x<155 check that with a graph.

  • equation trig -

    thnx

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

More Related Questions

Post a New Question