If \( A=\sin ^{8} \theta+\cos ^{14} \theta \), then for all values ...

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If \( A=\sin ^{8} \theta+\cos ^{14} \theta \), then for all values of \( \theta \)
(a) \( A1 \)
(b) \( A \geq 1 \)
(c) \( A1 \)
(d) \( A \leq 1 \)
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