Maths-
General
Easy
Question
Assertion (A) : In given fig., Length of ST = 8
Reason (R) : The tangents at point P and Q on parabola meet in T, then ST2 = SP. SQ.
- If both (A) and (R) are true, and (R) is the correct explanation of (A).
- If both (A) and (R) are true but (R) is not the correct explanation of (A).
- If (A) is true but (R) is false.
- If (A) is false but (R) is true.
The correct answer is: If both (A) and (R) are true, and (R) is the correct explanation of (A).
Tangent at P(at12, 2at1), Q (at22, 2at2) meet at
T(at1t2, a(t1+ t2)
Find ST, SP, SQ
ST2 = SP. SQ
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