Question
Download Solution PDFयदि Tan A Tan B +
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFदिया गया है:
Tan A Tan B +
प्रयुक्त सूत्र:
Cos (a + b)= cos a cos b - sin a sin b
गणना:
Tan A Tan B +
⇒ Tan A Tan B Cos A Cos B + Cos x = Cos A Cos B
⇒ Sin A Sin B + Cos x = Cos A Cos B
⇒ Cos x = Cos A Cos B - Sin A Sin B
⇒ Cos x = Cos (A + B)
⇒ x = A + B
इसलिए, सही उत्तर 'विकल्प 3' है।
Last updated on Jul 10, 2025
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