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If 3sintheta+4costheta=5,then 4sintheta-...

If `3sintheta+4costheta=5`,then `4sintheta-3costheta=`

A

a)1

B

b)0

C

c)-1

D

d)25/2

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Knowledge Check

  • If A=sintheta+costheta and B=sintheta-costheta then which of the following is true ?

    A
    `A^2+B^2=1`
    B
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    C
    `A^2+B^2=2`
    D
    `2A^2+B^2=4`
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