Question
Evaluate:
cosec(65° + A) - sec(25° - A)
cosec(65° + A) - sec(25° - A)
✓
Answer
cosec(65° + A) - sec(25° - A)
= cosec[90° - (25° - A)] - sec(25° - A)
= sec(25° - A) - sec(25° - A)
= 0
= cosec[90° - (25° - A)] - sec(25° - A)
= sec(25° - A) - sec(25° - A)
= 0
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