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OpenStudy (anonymous):
for sin3x = 1/2 why is the answer pi/18 and 5pi/18 ?
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OpenStudy (apoorvk):
5pi/18 will be solution. because 5pi/18 is within the limit for principle values of sin^-1(x) which is from (-pi/2) to (pi/2) see. the general solution for sinx=a (where a less than 1 and greater than -1) is: |dw:1332718808305:dw|
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