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solve sin^4x=1+tan^8x...

solve `sin^4x=1+tan^8x`

A

`x=2npi + pi/8, n int l`

B

`x=npi + pi/12, n int l`

C

`x = 2npi +pi/24, n int l`

D

None of these

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The correct Answer is:
B, D
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