1. For the equation 2x² + 2xy + In the procedure, highlight the following results: a. rotation equations b. Coefficient of x'y' c. Value of tan(20) 2y²-2x-10y + 11 = 0 eliminate the xy term by rotating the coordinate axes. d. value of sin(0) e. value of cos(20) f. Equation in the x'y'-plane

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