Question
Download Solution PDFABCD ఒక చక్రీయ చతుర్భుజం అయితే, cos2 A – cos2 B – cos2 C + cos2 D విలువ:?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDF⇒ ? = cos2 A – cos2 B – cos2 C + cos2 D
⇒ ? = (cos A + cosB)(cos A – cos B) + (cos D – cos C)(cos D + cos C)
చక్రీయ చతుర్భుజం యొక్క వ్యతిరేక కోణాలు అనుబంధంగా ఉంటాయి.
∴ cos2 A – cos2 B – cos2 C + cos2 D = 0
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