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OpenStudy (anonymous):
Find all values of x in the interval [0,2pi] that satisfy the equation 7sin(2X)=7cos(x)
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OpenStudy (anonymous):
\[sin(2X) = 2 *sin(X) * cos(X)\] so, in this case, \[7 * sin(X) = 7\], which means \[sin(X) = 1\], which means X = pi/2, 3pi/2
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