Question

cosec(65+A) -sec(25-A)-tan(55-A)+cot(35+A) ​

Answer 1

Answer:

cosec (90 - x) = sec x

tan (90-A) = cot A

cosec (65+A) - sec (25-A) - tan (55-A) + cot (35+A)

= cosec {90 - (25-A)} - sec (25-A) - tan {90 - (35+A)} + cot (35+A)

= sec (25-A) - sec (25-A) - cot (35+A) + cot (35+A)

= 0

Hope this helps. Happy learning!!!