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किंमत काढा. cos 60° × cos 30° + sin 60° × sin 30° - Mathematics 2 - Geometry [गणित २ - भूमिती]

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Question

किंमत काढा.

cos 60° × cos 30° + sin 60° × sin 30°

Sum
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Solution

cos 60° × cos 30° + sin 60° × sin 30°

= `1/2 xxsqrt3/2 + sqrt3/2 xx 1/2`

= `sqrt3/4 + sqrt 3/4`

= `(sqrt3 + sqrt3)/4`

= `(2sqrt3)/4`

= `sqrt 3/2`

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30° व 60° या कोनांची त्रिकोणमितीय गुणोत्तरे
  Is there an error in this question or solution?
Chapter 8: त्रिकोणमिती - सरावसंच 8.2 [Page 112]

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Balbharati Ganit 2 [Marathi] Standard 9 Maharashtra State Board
Chapter 8 त्रिकोणमिती
सरावसंच 8.2 | Q 2. (vi) | Page 112
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