Elimininate θ from the following: x = 4cosθ - 5sinθ, y = 4sinθ + 5cosθ.
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Step-by-step explanation:
x²=4²cos²A+5²sin²A+40sinA.cosA
y²=4²sin²A+5²cos²A-40sinA.cosA
x²+y²=4²+5²
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