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Multiple Choice
Separate the variables of the following differential equation.
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B
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D
Verified step by step guidance
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Step 1: Start with the given differential equation: ysin²(θ) * (dy/dθ) = 1.
Step 2: Rewrite the equation to separate the variables. Multiply both sides by dθ and divide by ysin²(θ) to isolate dy and dθ: (1/y) * dy = (1/sin²(θ)) * dθ.
Step 3: Recognize that 1/sin²(θ) can be rewritten using the trigonometric identity for cosecant: 1/sin²(θ) = csc²(θ). Substitute this into the equation: (1/y) * dy = csc²(θ) * dθ.
Step 4: Multiply through by y to simplify the left-hand side: y * dy = csc²(θ) * dθ.
Step 5: The variables are now separated, with y terms on one side and θ terms on the other. The equation is ready for integration: ∫y * dy = ∫csc²(θ) * dθ.