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प्रश्न
Evaluate:
tan (55° – A) – cot (35° + A)
मूल्यांकन
उत्तर
tan (55° – A) – cot (35° + A)
= tan [90° – (35° + A)] – cot (35° + A)
= cot (35° + A) – cot (35° + A)
= 0
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Complimentary Angles for Tangent ( Tan ) and Contangency ( Cot )
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