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यदि sec θ = 5/4, तो सिद्ध करें कि tan θ / (1 + tan² θ) = sin θ / sec θ

यदि sec θ = 5/4, तो सिद्ध करें कि tan θ / (1 + tan² θ) = sin θ / sec θ

यदि sec θ = 5/4, तो सिद्ध करें कि tan θ / (1 + tan² θ) = sin θ / sec θ

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