Find the resultant of two vo vector & and & and a Givenly B = 8 – & the angle between them in 90°​

Question

Find the resultant of
two
vo vector & and
& and a Givenly
B = 8 – & the
angle
between them in 90°​

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Lydia 1 month 2021-08-11T09:54:59+00:00 1 Answer 0 views 0

Answers ( )

    0
    2021-08-11T09:56:17+00:00

    Answer:

    The angle α which the resultant R makes with A is given by

    tanα=

    A+Bcosθ

    Bsinθ

    or

    cos(θ/2)

    sin(θ/2)

    =

    A+Bcosθ

    2Bsin(θ/2)cos(θ/2)

    which gives A+Bcosθ=2Bcos

    2

    (

    2

    θ

    )

    or A+B[2cos

    2

    (

    2

    θ

    )−1]=2Bcos

    2

    (

    2

    θ

    )

    A=B

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