Mathematics
Evaluate :
cosec (65° + A) - sec (25° - A)
Trigonometric Identities
9 Likes
Answer
cosec (65° + A) - sec (25° - A)
= cosec [(90° - 25°) + A] - sec (25° - A)
= cosec [90° - (25° - A)] - sec (25° - A)
= sec (25° - A) - sec (25° - A)
= 0
Hence, cosec (65° + A) - sec (25° - A) = 0.
Answered By
8 Likes