Mathematics
Evaluate :
tan (55° - A) - cot (35° + A)
Trigonometric Identities
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Answer
tan (55° - A) - cot (35° + A)
= 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.
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