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    precios11236's Avatar
    precios11236 Posts: 1, Reputation: 1
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    #1

    May 1, 2011, 01:54 PM
    sin(2theta)=1/2?
    Need help solving this problem
    jcaron2's Avatar
    jcaron2 Posts: 986, Reputation: 204
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    #2

    May 1, 2011, 09:13 PM
    Can you think of what angle it is whose sine is 1/2? It's not 45 degrees (pi/4 radians); that angle has a sine of sqrt(2)/2. But it's another one of those common angles whose sine and cosine you memorize when you first learn trigonometry.

    Once you figure out which angle has a sine of 1/2, just set that equal to 2theta.
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