If ( is the angle subtended by double ordinate at vertex of y? = 4ax then its length is​

Question

If ( is the angle subtended by double
ordinate at vertex of y? = 4ax then its
length is​

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Luna 1 week 2021-09-05T06:50:04+00:00 1 Answer 0 views 0

Answers ( )

    0
    2021-09-05T06:51:45+00:00

    Answer:

    Let PQ be the coordinate

    Hence P has y-coordinate

    =4a, as y

    2

    =4ax

    ⇒ x=

    4a

    y

    2

    =

    4a

    (4a)

    2

    =4a

    In △OMP

    tanθ=

    4a

    4a

    =1

    ⇒ θ=45

    o

    ⇒ ∠POQ=2θ=90

    o

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