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What is sin12° sin48° equal to? 

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NDA-II 2024 (Maths) Official Paper (Held On: 01 Sept, 2024)
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Answer (Detailed Solution Below)

Option 3 :
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Detailed Solution

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Concept:

Product-to-Sum Formulas:

  • The product-to-sum formulas are used to express products of sines and cosines as sums.
  • For sines, the formula is:

 

Calculation:

⇒ sin12°.sin48° = 

= 

= 

∴ Option (c) is correct

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