1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Finding the solution

  1. Mar 9, 2007 #1
    This problem seems really easy but I don't know how to solve it. Can someone please help me?

    Give the solution in radians which is in the second quadrant for the equation
    4 sin(x) = 1.8
  2. jcsd
  3. Mar 10, 2007 #2

    Gib Z

    User Avatar
    Homework Helper

    [tex]4\sin x =1.8[/tex]

    [tex]\sin x = \frac{9}{20}[/tex]

    [tex]x = \arcsin(\frac{9}{20})[/tex]

    That answer will give you the solution in the first quadrant.

    Use the fact [tex]\sin (\pi - x) = \sin x[/tex] to finish off.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook