Question

Evaluate cosec(65+x) - sec(25-x)

Answer 1

Answer: 0

Step-by-step explanation:

cosec(65 + x) - sec(25 - x)

= cosec(65 + x)  - cosec(90 - (25-x))           { sec x = cosec(90-x) }

= cosec(65 + x) - cosec(90 - 25 + x )          { opening brackets }

= cosec(65 + x) - cosec(65 + x)

= 0

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