Evaluate :
tan (55° - A) - cot (35° + A)
22 Likes
= tan [(90° - 35°) - A] - cot (35° + A)
= tan [90° - (35° + A)] - cot (35° + A)
= cot (35° + A) - cot (35° + A)
= 0
Hence, tan (55° - A) - cot (35° + A) = 0.
Answered By
15 Likes
3 cos 80° cosec 10° + 2 sin 59° sec 31°
cosec (65° + A) - sec (25° - A)