document.write( "Question 1127466: Find θ, 0° ≤ θ < 360°, given the following information.
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document.write( "cos θ = − squr(3)/2 and θ in QII\r
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document.write( "θ = ° \n" );
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Algebra.Com's Answer #743882 by stanbon(75887) ![]() You can put this solution on YOUR website! Find θ, 0° ≤ θ < 360°, given the following information. \n" ); document.write( "cos θ = − squr(3)/2 and θ in QII \n" ); document.write( "------ \n" ); document.write( "Sketch a 30-60 degree right triangle \n" ); document.write( "Let the side opposite the 30 deg angle be 1 \n" ); document.write( "Then the hypotenuse is 2 \n" ); document.write( "And the base is sqrt(3) \n" ); document.write( "---- \n" ); document.write( "So the cos(30) = sqrt(3)/2 \n" ); document.write( "------ \n" ); document.write( "For your problem the reference angle is arccos(sqrt(3)/2) = 30 degrees \n" ); document.write( "---- \n" ); document.write( "In QII theta = 180+30 = 210 degrees \n" ); document.write( "------------------ \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " |