Mathematics
Evaluate :
tan(55° - A) - cot(35° + A)
Trigonometric Identities
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Answer
Solving,
⇒ tan(55° - A) - cot(35° + A)
⇒ tan[90° - (35° + A)] - cot(35° + A)
By formula,
tan(90° - θ) = cot θ
⇒ cot(35° + A) - cot(35° + A)
⇒ 0.
Hence, tan(55° - A) - cot(35° + A) = 0
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