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If 5 sinx cosy = 1 and 4 tan x = tany, t...

If `5 sinx cosy = 1` and `4 tan x = tany`, then

A

`x=(m+2n)(pi)/(2)+(pi)/(4)+(-1)^(m)1/2sin^(-1)(-3/5),m, n in Z`

B

`y=(2n-m)(pi)/(2)+(pi)/(4)+(-1)^(m+1)(1)/(2)sin^(-1)(-3/5),m,n in Z`

C

`x = (m+n)'(pi)/(2)+(pi)/(4)+(-1)^(m)1/2sin^(-1)(-3/5),m,nin Z`

D

`y=(n-m)(pi)/(2)+(pi)/(4)+(-1)^(m+1)1/2sin^(-1)(-3/5),m,n in Z`

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A
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