document.write( "Question 918948: solve the equation for solutions in the interval [0,2 pie): cos(x) = sin(2x) \n" ); document.write( "

Algebra.Com's Answer #557335 by ewatrrr(24785) $\"\"$ $\"About$

You can put this solution on YOUR website!
the interval [0,2 pie):
\n" ); document.write( "cos(x) = sin(2x)
\n" ); document.write( "cos(x) = 2 sin(x)cos(x)
\n" ); document.write( "1/2 = sin(x), x = 30°, 150° 0r x = pi/6, 5pi/6
\n" ); document.write( "(cosx,sinx) unit circle Summary
\n" ); document.write( "

. \n" ); document.write( "

\n" );