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Trig

  • 26-09-2015 4:07pm
    #1
    Take Your Pants Off
    Registered Users Posts: 1,519 ✭✭✭


    Im kind of stuck on part b of the qs. I only get so far.
    If someone could help me with this. Much appreciated.


Comments

  • #2
    skippy1977
    Registered Users, Registered Users 2 Posts: 284 ✭✭skippy1977


    I've done out the solution but it assumes that you know how to find all the solutions of Trigonometric Equations (by drawing a circle and labelling A C T S, sketching solution, finding reference angle etc ...)
    Using inverse on the calculator will yield one solution only but as you can see from the graph there are many places where the function cuts the line y=1/2.

    Trig-Solution.png


  • #3
    legocrazy505
    Closed Accounts Posts: 691 ✭✭✭legocrazy505


    And to remember the circle labels, anti-clockwise it's All Silly Teachers Cry. That's what our teacher told us anyway. :P


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