Question
Download Solution PDFABCD ഒരു ചാക്രിക ചതുർഭുജം ആണെങ്കിൽ, cos2A – cos2B – cos2C + cos2D യുടെ മൂല്യം ഇതാണ്:
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDF⇒ ? = cos2A – cos2B – cos2C + cos2D
⇒ ? = (cos A + cosB)(cos A – cos B) + (cos D – cos C)(cos D + cos C)
ചാക്രിക ചതുർഭുജത്തിന്റെ വിപരീത കോണുകൾ പൂരകമാണ്.
∴ cos2A – cos2B – cos2C + cos2D = 0Last updated on Jun 11, 2025
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