Question
Download Solution PDFजर tan A = 10/15, तर cos2 Aचे मूल्य किती असेल?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFदिलेल्याप्रमाणे:
tan A = 10/15
गणना:
tan A = लंब/पाया
पायथॅगोरसचे प्रमेय वापरून,
कर्ण2 = लंब2 + पाया2
कर्ण2 = 102 + 152
कर्ण = √325
cos A = पाया/कर्ण
cos A = 15/√325
cos2 A = 225/325
∴ पर्याय 3 हे योग्य उत्तर आहे.
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