If cos^4 theta sec^2 alpha,1/2 and sin^4...

If `cos^4 theta sec^2 alpha,1/2` and `sin^4 theta cosec^2 alpha` are in `A.P.`, then `cos^8 theta sec^6 alpha ,1/2` and `sin^8 theta cosec^6 alpha` are

A

AP

B

GP

C

HP

D

None of these

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The correct Answer is:

A

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