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प्रश्न
Evaluate:
cosec (65° + A) – sec (25° – A)
मूल्यांकन
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उत्तर
cosec (65° + A) – sec (25° – A)
= cosec [90° – (25° – A)] – sec (25° – A)
= sec (25° – A) – sec (25° – A)
= 0
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