Asked by Don Morris
                Find all the angles between 0° and360° which satisfy: 2sin^2 y - 3cos y = 0?
            
            
        Answers
                    Answered by
            R_scott
            
    substituting ... 2[1 - cos^2(y)] - 3 cos(y) = 0 ... -2 cos^2(y) - 3 cos(y) + 2 = 0
solve the quadratic for cos(y) and fill in the angles
    
solve the quadratic for cos(y) and fill in the angles
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