यदि tan A = cot B, तो सिद्ध कीजिए कि A + B = 90°.

Question

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Anonymous · Accepted Answer

हमें प्राप्त हैं:
tan A = cot B
⇒ cot (90° - A) = cot B
⇒ 90° - A = B
⇒ 90° = A + B
अथवा A + B = 90°

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