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Two tangents from P(6, 5) touch the parabola y² = 4x at Q and R. Find the area of triangle PQR.
- 1/2
- 1
- 2
- 1/4
Correct answer: 1/2
Solution
Using the standard area formula with S1 = y1² - 4x1 = 25 - 24 = 1 gives area = (1)^(3/2)/2 = 1/2.
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