Integrate x * sin (3x) ^ 2 dx

step-by-step explanation:

∆abc has the points a(1, 7), b(-2, 2), and c(4, 2) as its vertices. formed with the point d(1, 2) as its third vertex, then ∆abd is triangle.

other answer is correct. i had used the radius of the radius somehow. a website:

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i can answer this if i have the answer choices